This is the README file for D2LIP1 D2LIP1 contains the Dynamics Explorer-2 (D2) LAPI ion data from the programmable power supply 1 (PPS-1), which was included within the LAPI VAX binary data. The D2LIP1 CDF files were generated by converting the VAX binary format stored at the Space Physics Data Facility (SPDF). The VAX binary was converted from the original Sigma-9 machine that was used to collect and process Dynamics Explorer telemetry. Several status bytes are included in this CDF and indicates the Status of the energy scan of LAPI and of processing achieved at Goddard Space Flight Center (GSFC). Status Meaning Number of Bits 0 LAPI PPS 1 Start Step 4 1 LAPI PPS 1 Stop Step 4 2 LAPI PPS 1 Skip Step 4 3 LAPI PPS 1 Step Rate 4 4 SPDF Status Flag - All 8 Three bits which make up the SPDF Status Flag was extracted so that they could be individually examined. These were defined as follows: Status Meaning Number of Bits 5 SPDF Bad Sensor ID 1 6 SPDF Previous Sensors Differs 1 7 SPDF Time Gap 1 There are 64 defined voltage steps within each PPS. They are indexed from 0 to 63. Step 0 is the highest voltage (energy) and step 63 is the lowest voltage (energy). PPS voltage stepping occurs in a decay pattern. The LAPI PPS Start Step contains the index at which the PPS starts its decay. The LAPI PPS Stop Step contains the index of the last step of the PPS decay. The LAPI PPS Skip Step contains the number of steps which are skipped during the decay sweep. The LAPI PPS Step Rate is an index which indicates how many multiples of the accumulation period occur before the next step (an accumulation period is 31.25 msec). The SPDF status byte defines the processing undergone when converting the original DE telemetry from its Sigma-9 format to its VAX binary format. The SPDF status byte was meant to describe the values that were encountered when reading the Sigma-9 magnetic tape. Bits 3, 6, and 7 have been extracted from the SPDF Status Flag. Bit 3 indicates when the SPDF found a Bad Sensor ID for LAPI, bit 6 when the SPDF found the Previous LAPI Sensors Differs from the current sensors, and bit 7 when the SPDF detected a Time Gap in telemetry. The remainder of the bits were not defined in the SPDF documentation. These SPDF flags are specific to LAPI sensor data and telemetry. This CDF contains two types of spectral data. The first type of spectral data from the LAPI instrument as measured on the spacecraft. The second type of spectral data is the threshold value, defined as the 1 count level. This CDF file contains LAPI spectral data in the following units where -3.4e+38 is used to indicate a fill value: Name Unit Comment Telemetry Index lookup table index stored in telemetry counts c/acc actual counts in the accumulation period DNF cnts/(cm**2 sr s eV) differential number flux DEF ergs/(cm**2 sr s eV) differential energy flux DF sec**3/m**6/sr distribution function It also contains the energy scan variable as the energy index and energy value. The energy index is the PPS energy (or voltage) step. The energy values are obtained by using the voltage represented at the PPS index and multiplying by the Sensitivity value for the SPS unit. Expressed in eV, the energy in Joule is just the multiplication by the conversion factor 1.602e-19 Joule/eV. Relating the energy to velocity of the particle in m/s gives SQRT (2*E/M) where E is the energy in Joule and M is the particle mass (9.11e-31 kg for electrons and used for LAPI, the mass of a proton, 1.67E-27 kg). Often, the velocity is expressed in km, so just divide the velocity in m/s by 1000 to obtain the particle velocity in km/s. This CDF file contains LAPI Threshold data in the following units where -3.4e+38 is used to indicate a fill value: Name Unit Comment counts c/acc actual counts in the accumulation period DNF cnts/(cm**2 sr s eV) differential number flux DEF ergs/(cm**2 sr s eV) differential energy flux DF sec**3/m**6/sr distribution function It also contains the same energy scan variables as for the spectral data. The LAPI experiment had 15 Soft Particle Spectrometers (SPSs) mounted on a scan platform which rotated to keep LAPI aligned with the projection of the magnetic field within the LAPI view plane. This plane was parallel to the x-y plane of the spacecraft. An aspect magnetometer was part of the LAPI experiment and it controlled the scan platform to keep the LAPI aligned with the the component of the magnetic field which lies within the scanner rotation plane. The scanner rotated to keep the LAPI SPS units always mounted in the sane direction with respect to the downward direction of the magnetic field. The names of the SPS units were defined as being their mounting angles with respect to the downward direction of the particle velocity vector. Table 1 shows the alignment of the LAPI sensors. The sensor names are the mounting angles of the sensors, which are the approximate precipitation angles with respect to the magnetic field. Each SPS unit detects both electrons and ions. Table 1: LAPI sensor cross reference to CDF files. LAPI DOWNWARD SENSOR NUMBERS PITCH ANGLE Electron Ion ELECTRON ION (DEGREES) PPS CDF Name CDF Name 0 1 0+ 1 D2LEP1 D2LIP1 2 3 180- 1 D2LEP1 D2LIP1 4 5 30 1 D2LEP1 D2LIP1 6 7 172.5 1 D2LEP1 D2LIP1 8 9 7.5 1 D2LEP1 D2LIP1 10 11 45 1 D2LEP1 D2LIP1 12 13 112.5 1 D2LEP1 D2LIP1 14 15 97.5 1 D2LEP1 D2LIP1 16 17 165 2 D2LEP2 D2LIP2 18 19 60 2 D2LEP2 D2LIP2 20 21 135 2 D2LEP2 D2LIP2 22 23 105 2 D2LEP2 D2LIP2 24 25 15 2 D2LEP2 D2LIP2 26 27 180+ 2 D2LEP2 D2LIP2 28 29 0- 2 D2LEP2 D2LIP2 Out of plane detection of the plasma was controlled by the magnetometer which switched the telemetry of the field aligned sensors between the field aligned SPS units in order to make measurements close to the magnetic field line. Four SPS units had a 5 deg x 5 deg field of full view and were aligned on the plus and minus sides of the measurement plane by 2.5 deg. These units were designated the 0+, 0-, 180+, and 180- sensors. The remainder of the 11 SPS units had a 5 deg x 20 deg full field of view and were orientated so that the 5 deg direction was in the scanner rotation plane (centered at the mounting angle) which is the x-y plane of the spacecraft. Each of these SPS units measured from 10 deg above the rotation plane to 10 deg below the measurement plane. The SPS units were mounted in three stacks of five. Their assignments are shown in Table 2 along with other instrument characteristics (DELTA E is the width of the energy channel, Ec is the center energy of the channel response, and V is the voltage applied to the deflection plates by the PPS). There were two high voltage power supply (HVPS) units which supplied constant high voltage power to the sensors. There were also two programmable power supply (PPS) units which supplied bipolar power to the particle separation system which stepped through deflection voltages to generate the energy spectrum. The assignments of HVPS and PPS connections were such that failures in these power supplies would still allow meaningful science to be performed. Table 2. LAPI Sensor assembly and calibration characteristics. LAPI RESOLUTION SENSITIVITY SPS SENSOR NUMBERS Full Field DELTA E/Ec % Ec/V eV/volt Analyzer HVPS PPS ELECTRON ION Stack of view ELECTRON ION ELECTRON ION 0+ 1 1 0 1 A 5x5 deg 33 26 12.55 11.83 0- 2 2 28 29 B 5x5 deg 35 25 12.59 11.78 7.5 2 1 8 9 B 5x20 deg 34 23 12.39 11.58 15 1 2 24 25 A 5x20 deg 39 25 12.25 11.35 30 1 1 4 5 A 5x20 deg 33 19 12.72 11.44 45 2 1 10 11 A 5x20 deg 34 27 12.28 11.94 60 2 2 18 19 A 5x20 deg 33 22 12.59 11.66 97.5 1 1 14 15 C 5x20 deg 33 24 12.79 11.76 105 1 2 22 23 C 5x20 deg 34 24 12.37 11.72 112.5 2 1 12 13 C 5x20 deg 34 21 12.54 11.34 135 2 2 20 21 B 5x20 deg 32 26 12.58 11.22 165 1 2 16 17 B 5x20 deg 33 25 12.27 11.60 172.5 1 2 6 7 B 5x20 deg 33 20 12.63 11.61 180+ 2 2 26 27 C 5x5 deg 32 28 12.18 11.18 180- 1 1 2 3 C 5x5 deg 32 23 12.09 11.52 The time step for a sample are multiples of the accumulation period, which is 32 steps/sec or 31.25 msec per step. The multiples are the PPS stepping rate stored as an integer byte value. The geometric factor is based on the physical volume of space viewed and is 1.36e-4 cm**2 sr for the 5x20 degree SPSs and 2.16e-5 cm**2 sr for the 5x5 deg SPSs. Unlike some other instruments, the detector efficiency is a separate quantity and is tied to the energy step as shown in Table 3. For Ions detected by LAPI, the ion efficiency was assumed to be a constant because the ion efficiency is mass dependent. Since the LAPI ion sensors do not distinguish between the mass of the ions, only the average efficiency could be used. Table 3. LAPI efficiency for LAPI electrons and ions. SPS Energy Efficiency SPS Energy Efficiency Step Index Electron Ion Step Index Electron Ion 0 0.26453 0.65 32 0.88931 0.65 1 0.28030 0.65 33 0.89889 0.65 2 0.29687 0.65 34 0.90742 0.65 3 0.31418 0.65 35 0.91488 0.65 4 0.33226 0.65 36 0.92133 0.65 5 0.35076 0.65 37 0.92678 0.65 6 0.36988 0.65 38 0.93138 0.65 7 0.39015 0.65 39 0.93531 0.65 8 0.41084 0.65 40 0.93852 0.65 9 0.43209 0.65 41 0.94118 0.65 10 0.45416 0.65 42 0.94337 0.65 11 0.47674 0.65 43 0.94514 0.65 12 0.49949 0.65 44 0.94658 0.65 13 0.52243 0.65 45 0.94774 0.65 14 0.54578 0.65 46 0.94868 0.65 15 0.56951 0.65 47 0.94945 0.65 16 0.59419 0.65 48 0.95009 0.65 17 0.61792 0.65 49 0.95059 0.65 18 0.64148 0.65 50 0.95100 0.65 19 0.66468 0.65 51 0.95133 0.65 20 0.68747 0.65 52 0.95159 0.65 21 0.70946 0.65 53 0.95181 0.65 22 0.73061 0.65 54 0.95199 0.65 23 0.75147 0.65 55 0.95214 0.65 24 0.77179 0.65 56 0.95227 0.65 25 0.79045 0.65 57 0.95237 0.65 26 0.80815 0.65 58 0.95245 0.65 27 0.82472 0.65 59 0.95252 0.65 28 0.84014 0.65 60 0.95258 0.65 29 0.85414 0.65 61 0.95263 0.65 30 0.86697 0.65 62 0.95267 0.65 31 0.87897 0.65 63 n/a n/a The conversion from the telemetry index into the number of counts in an accumulation period is shown in Table 4 below. Table 4. Relation between the Telemetry Index and the Actual Counts detected by LAPI. TM ACTUAL TM ACTUAL TM ACTUAL TM ACTUAL INDEX COUNTS INDEX COUNTS INDEX COUNTS INDEX COUNTS 0 n/a 64 64.5 128 1054.5 192 16894.5 1 n/a 65 68.5 129 1118.5 193 17918.5 2 0.0 66 72.5 130 1182.5 194 18942.5 3 n/a 67 76.5 131 1246.5 195 19966.5 4 1.0 68 80.5 132 1310.5 196 20990.5 5 n/a 69 84.5 133 1374.5 197 22014.5 6 2.0 70 88.5 134 1438.5 198 23038.5 7 n/a 71 92.5 135 1502.5 199 24062.5 8 3.0 72 96.5 136 1566.5 200 25086.5 9 n/a 73 100.5 137 1630.5 201 26110.5 10 4.0 74 104.5 138 1694.5 202 27134.5 11 n/a 75 108.5 139 1758.5 203 28158.5 12 5.0 76 112.5 140 1822.5 204 29182.5 13 n/a 77 116.5 141 1886.5 205 30206.5 14 6.0 78 120.5 142 1950.5 206 31230.5 15 n/a 79 124.5 143 2014.5 207 32254.5 16 7.0 80 130.5 144 2110.5 208 33790.5 17 n/a 81 138.5 145 2238.5 209 35838.5 18 8.0 82 146.5 146 2366.5 210 37886.5 19 n/a 83 154.5 147 2494.5 211 39934.5 20 9.0 84 162.5 148 2622.5 212 41982.5 21 n/a 85 170.5 149 2750.5 213 44030.5 22 10.0 86 178.5 150 2878.5 214 46078.5 23 n/a 87 186.5 151 3006.5 215 48126.5 24 11.0 88 194.5 152 3134.5 216 50174.5 25 n/a 89 202.5 153 3262.5 217 52222.5 26 12.0 90 210.5 154 3390.5 218 54270.5 27 n/a 91 218.5 155 3518.5 219 56318.5 28 13.0 92 226.5 156 3646.5 220 58366.5 29 n/a 93 234.5 157 3774.5 221 60414.5 30 14.0 94 242.5 158 3902.5 222 62462.5 31 n/a 95 250.5 159 4030.5 223 64510.5 32 15.0 96 262.5 160 4222.5 224 67582.5 33 16.0 97 278.5 161 4478.5 225 71678.5 34 17.0 98 294.5 162 4734.5 226 75774.5 35 18.0 99 310.5 163 4990.5 227 79870.5 36 19.0 100 326.5 164 5246.5 228 83966.5 37 20.0 101 342.5 165 5502.5 229 88062.5 38 21.0 102 358.5 166 5758.5 230 92158.5 39 22.0 103 374.5 167 6014.5 231 96254.5 40 23.0 104 390.5 168 6270.5 232 100351.0 41 24.0 105 406.5 169 6526.5 233 104447.0 42 25.0 106 422.5 170 6782.5 234 108543.0 43 26.0 107 438.5 171 7038.5 235 112639.0 44 27.0 108 454.5 172 7294.5 236 116735.0 45 28.0 109 470.5 173 7550.5 237 120831.0 46 29.0 110 486.5 174 7806.5 238 124927.0 47 30.0 111 502.5 175 8062.5 239 129023.0 48 31.5 112 526.5 176 8446.5 240 135167.0 49 33.5 113 558.5 177 8958.5 241 143359.0 50 35.5 114 590.5 178 9470.5 242 151551.0 51 37.5 115 622.5 179 9982.5 243 159743.0 52 39.5 116 654.5 180 10494.5 244 167935.0 53 41.5 117 686.5 181 11006.5 245 176127.0 54 43.5 118 718.5 182 11518.5 246 184319.0 55 45.5 119 750.5 183 12030.5 247 192511.0 56 47.5 120 782.5 184 12542.5 248 200703.0 57 49.5 121 814.5 185 13054.5 249 208895.0 58 51.5 122 846.5 186 13566.5 250 217087.0 59 53.5 123 878.5 187 14078.5 251 225279.0 60 55.5 124 910.5 188 14590.5 252 233471.0 61 57.5 125 942.5 189 15102.5 253 241663.0 62 59.5 126 974.5 190 15614.5 254 249855.0 63 61.5 127 1006.5 191 16126.5 255 258047.0 From the telemetry index, the above look-up table gives the number of counts in an accumulation interval. The number of counts in an accumulation period is corrected by dividing by the detector efficiency. The corrected number of counts in an accumulation interval is divided by the accumulation period to give the count rate. The count rate is divided by the geometric factor and divided by the width of the energy window to give the differential number flux. The width of the energy window is the DELTA E/Ec factor given in table 2 is relative to the center energy (Ec) of the energy step. The center energy of the energy step is different for each sensor and is given at the Table 5 at the bottom of this README. The differential energy flux is generated by multiplying the center energy in eV from the tables below and then dividing by the conversion factor of 1.602e-12 ergs/eV. Finally, the distribution function is obtained by multiplying the differential number flux by the factor of M**2/(2 * Ec) and multiplying by 1e4 cm**2/m**2 and dividing by (1.602e-19 Joule/eV)**2 where Ec is the center energy in eV for the sensor given in Table 5 below and M is the particle mass (9.11e-31 kg for electrons and used for LAPI, the mass of a proton, 1.67E-27 kg). One should note that the Ion sensors of LAPI are not mass resolved. The most dominate ion species at LAPI altitudes are protons. LAPI used the proton mass in all calculations involving ion mass. Table 5. This is the energy table for the LAPI Ion Sensors. 0+ deg Sensor 180- deg Sensor 30 deg Sensor 172.5 deg Sensor 7.5 deg Sensor Step Energy (eV) Step Energy (eV) Step Energy (eV) Step Energy (eV) Step Energy (eV) 0 29474.445 0 28702.080 0 28502.760 0 28926.314 0 28851.570 1 25546.884 1 24877.440 1 24704.680 1 25071.794 1 25007.010 2 22128.015 2 21548.160 2 21398.519 2 21716.505 2 21660.390 3 19164.600 3 18662.399 3 18532.800 3 18808.199 3 18759.600 4 16591.575 4 16156.799 4 16044.599 4 16283.024 4 16240.949 5 14397.110 5 14019.840 5 13922.480 5 14129.369 5 14092.860 6 12498.395 6 12170.880 6 12086.360 6 12265.964 6 12234.270 7 10812.620 7 10529.279 7 10456.160 7 10611.539 7 10584.119 8 9369.360 8 9123.840 8 9060.479 8 9195.119 8 9171.359 9 8121.295 9 7908.480 9 7853.559 9 7970.264 9 7949.670 10 7027.020 10 6842.880 10 6795.360 10 6896.339 10 6878.520 11 6080.620 11 5921.280 11 5880.160 11 5967.540 11 5952.120 12 5270.264 12 5132.160 12 5096.519 12 5172.254 12 5158.889 13 4572.294 13 4452.480 13 4421.559 13 4487.264 13 4475.669 14 3963.050 14 3859.200 14 3832.399 14 3889.350 14 3879.299 15 3430.700 15 3340.799 15 3317.600 15 3366.899 15 3358.200 16 2953.951 16 2876.544 16 2856.568 16 2899.016 16 2891.526 17 2557.054 17 2490.047 17 2472.756 17 2509.501 17 2503.016 18 2213.393 18 2155.392 18 2140.423 18 2172.230 18 2166.618 19 1916.459 19 1866.240 19 1853.279 19 1880.819 19 1875.960 20 1659.157 20 1615.679 20 1604.460 20 1628.302 20 1624.094 21 1439.119 21 1401.407 21 1391.676 21 1412.356 21 1408.706 22 1248.656 22 1215.935 22 1207.492 22 1225.435 22 1222.268 23 1080.079 23 1051.775 23 1044.472 23 1059.992 23 1057.254 24 931.612 24 907.199 24 900.900 24 914.287 24 911.924 25 807.397 25 786.239 25 780.780 25 792.382 25 790.334 26 699.093 26 680.773 26 676.046 26 686.092 26 684.320 27 605.281 27 589.419 27 585.326 27 594.025 27 592.490 28 523.950 28 510.220 28 506.676 28 514.206 28 512.878 29 454.567 29 442.655 29 439.581 29 446.113 29 444.960 30 394.412 30 384.076 30 381.408 30 387.077 30 386.076 31 340.821 31 331.890 31 329.586 31 334.483 31 333.618 32 296.476 32 288.707 32 286.703 32 290.963 32 290.212 33 256.675 33 249.948 33 248.212 33 251.902 33 251.250 34 222.066 34 216.247 34 214.745 34 217.937 34 217.373 35 192.136 35 187.101 35 185.801 35 188.563 35 188.076 36 166.246 36 161.889 36 160.766 36 163.154 36 162.733 37 144.082 37 140.307 37 139.333 37 141.403 37 141.038 38 124.954 38 121.679 38 120.834 38 122.630 38 122.313 39 108.072 39 105.240 39 104.509 39 106.062 39 105.788 40 93.627 40 91.174 40 90.541 40 91.887 40 91.649 41 81.105 41 78.981 41 78.432 41 79.597 41 79.391 42 70.210 42 68.371 42 67.896 42 68.905 42 68.726 43 60.811 43 59.217 43 58.807 43 59.680 43 59.526 44 52.672 44 51.292 44 50.935 44 51.693 44 51.559 45 45.693 45 44.495 45 44.187 45 44.843 45 44.727 46 39.665 46 38.625 46 38.358 46 38.927 46 38.827 47 34.359 47 33.459 47 33.227 47 33.720 47 33.633 48 29.627 48 28.851 48 28.651 48 29.076 48 29.001 49 25.706 49 25.032 49 24.858 49 25.227 49 25.162 50 22.305 50 21.720 50 21.569 50 21.889 50 21.833 51 19.347 51 18.840 51 18.709 51 18.987 51 18.938 52 16.809 52 16.369 52 16.256 52 16.497 52 16.455 53 14.615 53 14.232 53 14.133 53 14.343 53 14.306 54 12.740 54 12.406 54 12.320 54 12.503 54 12.471 55 11.060 55 10.771 55 10.696 55 10.855 55 10.826 56 9.611 56 9.359 56 9.295 56 9.432 56 9.407 57 8.369 57 8.149 57 8.093 57 8.213 57 8.191 58 7.304 58 7.113 58 7.063 58 7.169 58 7.149 59 6.346 59 6.180 59 6.137 59 6.227 59 6.212 60 5.559 60 5.414 60 5.376 60 5.456 60 5.442 61 4.862 61 4.733 61 4.701 61 4.770 61 4.759 62 4.282 62 4.169 62 4.140 62 4.202 62 4.191 63 3.731 63 3.634 63 3.609 63 3.662 63 3.653 45 deg Sensor 112.5 deg Sensor 97.5 deg Sensor 165 deg Sensor 60 deg Sensor Step Energy (eV) Step Energy (eV) Step Energy (eV) Step Energy (eV) Step Energy (eV) 0 29748.510 0 28253.610 0 29300.040 0 28901.402 0 29050.890 1 25784.430 1 24488.730 1 25395.720 1 25050.200 1 25179.770 2 22333.770 2 21211.470 2 21997.080 2 21697.800 2 21810.030 3 19342.800 3 18370.800 3 19051.200 3 18792.000 3 18889.200 4 16745.850 4 15904.350 4 16493.399 4 16269.000 4 16353.149 5 14530.980 5 13800.780 5 14311.920 5 14117.200 5 14190.220 6 12614.609 6 11980.710 6 12424.440 6 12255.400 6 12318.790 7 10913.160 7 10364.760 7 10748.640 7 10602.400 7 10657.240 8 9456.480 8 8981.280 8 9313.920 8 9187.200 8 9234.720 9 8196.809 9 7784.910 9 8073.240 9 7963.400 9 8004.590 10 7092.360 10 6735.960 10 6985.440 10 6890.400 10 6926.040 11 6137.160 11 5828.760 11 6044.640 11 5962.400 11 5993.240 12 5319.269 12 5051.970 12 5239.080 12 5167.800 12 5194.530 13 4614.809 13 4382.910 13 4545.240 13 4483.400 13 4506.590 14 3999.899 14 3798.900 14 3939.600 14 3886.000 14 3906.100 15 3462.600 15 3288.600 15 3410.400 15 3364.000 15 3381.400 16 2981.417 16 2831.598 16 2936.472 16 2896.520 16 2911.502 17 2580.830 17 2451.141 17 2541.923 17 2507.339 17 2520.308 18 2233.974 18 2121.714 18 2200.296 18 2170.360 18 2181.586 19 1934.280 19 1837.080 19 1905.120 19 1879.200 19 1888.920 20 1674.585 20 1590.435 20 1649.339 20 1626.899 20 1635.314 21 1452.501 21 1379.511 21 1430.603 21 1411.139 21 1418.438 22 1260.267 22 1196.937 22 1241.267 22 1224.379 22 1230.712 23 1090.121 23 1035.342 23 1073.688 23 1059.080 23 1064.558 24 940.275 24 893.025 24 926.099 24 913.499 24 918.224 25 814.905 25 773.955 25 802.619 25 791.699 25 795.794 26 705.593 26 670.137 26 694.957 26 685.501 26 689.047 27 610.909 27 580.211 27 601.700 27 593.513 27 596.583 28 528.822 28 502.248 28 520.850 28 513.763 28 516.421 29 458.793 29 435.739 29 451.877 29 445.729 29 448.034 30 398.079 30 378.075 30 392.077 30 386.743 30 388.743 31 343.990 31 326.705 31 338.804 31 334.195 31 335.923 32 299.234 32 284.197 32 294.722 32 290.712 32 292.216 33 259.062 33 246.043 33 255.156 33 251.685 33 252.986 34 224.131 34 212.868 34 220.752 34 217.749 34 218.875 35 193.922 35 184.178 35 190.999 35 188.401 35 189.375 36 167.792 36 159.360 36 165.262 36 163.014 36 163.857 37 145.422 37 138.114 37 143.230 37 141.281 37 142.012 38 126.115 38 119.778 38 124.214 38 122.524 38 123.157 39 109.076 39 103.596 39 107.433 39 105.971 39 106.519 40 94.499 40 89.749 40 93.074 40 91.807 40 92.282 41 81.859 41 77.746 41 80.626 41 79.529 41 79.940 42 70.863 42 67.302 42 69.795 42 68.845 42 69.201 43 61.377 43 58.292 43 60.451 43 59.628 43 59.937 44 53.162 44 50.491 44 52.360 44 51.648 44 51.915 45 46.117 45 43.800 45 45.422 45 44.804 45 45.035 46 40.034 46 38.022 46 39.430 46 38.894 46 39.095 47 34.679 47 32.936 47 34.156 47 33.691 47 33.865 48 29.903 48 28.400 48 29.452 48 29.051 48 29.201 49 25.945 49 24.641 49 25.553 49 25.206 49 25.337 50 22.511 50 21.381 50 22.172 50 21.871 50 21.984 51 19.526 51 18.546 51 19.233 51 18.971 51 19.069 52 16.965 52 16.113 52 16.710 52 16.482 52 16.568 53 14.750 53 14.010 53 14.529 53 14.331 53 14.405 54 12.858 54 12.212 54 12.664 54 12.492 54 12.557 55 11.163 55 10.602 55 10.995 55 10.845 55 10.901 56 9.700 56 9.213 56 9.554 56 9.424 56 9.473 57 8.447 57 8.023 57 8.319 57 8.206 57 8.249 58 7.372 58 7.002 58 7.261 58 7.162 58 7.199 59 6.405 59 6.083 59 6.308 59 6.222 59 6.255 60 5.611 60 5.329 60 5.526 60 5.451 60 5.479 61 4.907 61 4.659 61 4.832 61 4.766 61 4.791 62 4.321 62 4.104 62 4.256 62 4.198 62 4.220 63 3.766 63 3.577 63 3.710 63 3.659 63 3.678 135 deg Sensor 105 deg Sensor 15 deg Sensor 180+ deg Sensor 0- deg Sensor Step Energy (eV) Step Energy (eV) Step Energy (eV) Step Energy (eV) Step Energy (eV) 0 27954.630 0 29200.380 0 28278.525 0 27854.969 0 29349.870 1 24229.590 1 25309.340 1 24510.325 1 24143.210 1 25438.910 2 20987.010 2 21922.259 2 21230.174 2 20912.191 2 22034.490 3 18176.399 3 18986.400 3 18387.000 3 18111.600 3 19083.600 4 15736.050 4 16437.300 4 15918.374 4 15679.951 4 16521.449 5 13654.740 5 14263.240 5 13812.949 5 13606.060 5 14336.259 6 11853.930 6 12382.180 6 11991.275 6 11811.670 6 12445.570 7 10255.080 7 10712.080 7 10373.900 7 10218.520 7 10766.920 8 8886.240 8 9282.240 8 8989.199 8 8854.560 8 9329.760 9 7702.530 9 8045.780 9 7791.775 9 7675.070 9 8086.969 10 6664.680 10 6961.680 10 6741.900 10 6640.920 10 6997.320 11 5767.080 11 6024.080 11 5833.900 11 5746.519 11 6054.920 12 4998.510 12 5221.260 12 5056.425 12 4980.690 12 5247.990 13 4336.530 13 4529.780 13 4386.775 13 4321.070 13 4552.969 14 3758.700 14 3926.200 14 3802.250 14 3745.299 14 3946.299 15 3253.800 15 3398.800 15 3291.500 15 3242.200 15 3416.200 16 2801.634 16 2926.484 16 2834.095 16 2791.646 16 2941.466 17 2425.203 17 2533.277 17 2453.302 17 2416.557 17 2546.246 18 2099.262 18 2192.812 18 2123.585 18 2091.778 18 2204.038 19 1817.640 19 1898.640 19 1838.700 19 1811.159 19 1908.360 20 1573.605 20 1643.729 20 1591.837 20 1567.995 20 1652.144 21 1364.913 21 1425.737 21 1380.727 21 1360.046 21 1433.036 22 1184.271 22 1237.045 22 1197.992 22 1180.049 22 1243.378 23 1024.386 23 1070.036 23 1036.254 23 1020.734 23 1075.514 24 883.575 24 922.949 24 893.812 24 880.425 24 927.674 25 765.765 25 799.889 25 774.637 25 763.035 25 803.984 26 663.045 26 692.593 26 670.727 26 660.682 26 696.139 27 574.070 27 599.653 27 580.722 27 572.024 27 602.723 28 496.933 28 519.078 28 502.691 28 495.162 28 521.736 29 431.128 29 450.340 29 436.123 29 429.591 29 452.645 30 374.074 30 390.744 30 378.409 30 372.741 30 392.744 31 323.247 31 337.652 31 326.993 31 322.095 31 339.380 32 281.189 32 293.720 32 284.447 32 280.187 32 295.224 33 243.440 33 254.287 33 246.260 33 242.572 33 255.590 34 210.615 34 220.001 34 213.055 34 209.864 34 221.128 35 182.229 35 190.350 35 184.340 35 181.579 35 191.324 36 157.674 36 164.700 36 159.501 36 157.112 36 165.544 37 136.653 37 142.743 37 138.236 37 136.166 37 143.473 38 118.511 38 123.792 38 119.883 38 118.088 38 124.425 39 102.499 39 107.067 39 103.687 39 102.134 39 107.615 40 88.800 40 92.757 40 89.828 40 88.483 40 93.232 41 76.923 41 80.351 41 77.815 41 76.650 41 80.763 42 66.590 42 69.557 42 67.361 42 66.353 42 69.913 43 57.675 43 60.245 43 58.344 43 57.470 43 60.554 44 49.956 44 52.182 44 50.535 44 49.778 44 52.449 45 43.337 45 45.268 45 43.838 45 43.182 45 45.499 46 37.620 46 39.296 46 38.056 46 37.486 46 39.498 47 32.587 47 34.040 47 32.965 47 32.471 47 34.214 48 28.099 48 29.352 48 28.425 48 27.999 48 29.502 49 24.380 49 25.467 49 24.663 49 24.294 49 25.597 50 21.154 50 22.097 50 21.400 50 21.079 50 22.210 51 18.349 51 19.167 51 18.562 51 18.284 51 19.265 52 15.943 52 16.653 52 16.128 52 15.886 52 16.739 53 13.861 53 14.479 53 14.022 53 13.812 53 14.553 54 12.083 54 12.621 54 12.223 54 12.040 54 12.686 55 10.490 55 10.957 55 10.611 55 10.453 55 11.013 56 9.116 56 9.521 56 9.221 56 9.083 56 9.570 57 7.937 57 8.291 57 8.029 57 7.909 57 8.333 58 6.928 58 7.236 58 7.008 58 6.903 58 7.273 59 6.019 59 6.287 59 6.089 59 5.997 59 6.319 60 5.272 60 5.507 60 5.334 60 5.254 60 5.536 61 4.611 61 4.816 61 4.664 61 4.594 61 4.841 62 4.060 62 4.241 62 4.108 62 4.047 62 4.263 63 3.539 63 3.696 63 3.580 63 3.526 63 3.716