4 manual mca report, Manual mca report – BNC SAM 935 Portable Gamma Spectroscopy System User Manual

Page 63

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SAM 935™ Instruction Manual

59

7.4

Manual MCA Report

The MCA report is available only in Manual mode of operation, which is described in Section 5.4.

MCA REPORT

DATE: 15-Jul-1999 13:28 BIAS: 768

EN CAL DATE: 15-Jul-1999 10:29 COARSE GAIN: 1

FINE GAIN: 1.62

BKG DATE: 15-Jul-1999 10:29 LOW DISC: 1.00%

GROSS CPM: 306479 HIGH DISC: 100.05%

NET CPM: 305978 ELAPSED LT: 146.43

GROSS INTEGRAL: 747963 ELAPSED RT: 152.90

NET INTEGRAL: 746740 DEAD TIME: 4.23%

FULL SCALE: 47384

PEAKS FOUND

CHN ENERGY GROSS AMBIENT CONTINUUM NET UNC

(keV) CPM CPM CPM CPM %

14 31.4 39114 20 5996 33097 ñ 0.38 Cs137

30 77.7 16519 75 14698 1745 с 4.72

56 205.4 32971 63 27766 5141 с 2.26

88 434.4 29850 24 21555 8270 с 1.34

111 656.6 91322 20 5293 86008 с 0.22 Cs137

130 871.3 343 17 320 5 с 211

141 1005.6 197 12 141 43 с 21.1

160 1270.7 126 11 31 83 с 8.93

2 OF 2 LIBRARY LINES FOR Cs137 FOUND Correlation =1.00

LINE PEAK INTENSITY NET CPM

32.9 31.5 7.12 33097

661.7 656.3 85.21 86008

NUCLIDES NOT PRESENT:

1 OF 2 LIBRARY LINES FOR Co60 FOUND Correlation =0.25

1 OF 7 LIBRARY LINES FOR Eu152 FOUND Correlation =0.10

0 OF 1 LIBRARY LINES FOR Co57 FOUND Correlation =0.00

LINES NOT ASSOCIATED WITH ANY NUCLIDE:

Energy Net CPM Eff Corrected

78.2 1745.1 8074.1 C

207.2 5141.2 31958.2 C

434.7 8270.0 116042.1 C

859.1 5.7 299.3 C

1012.9 43.8 2956.1 C

1271.9 83.6 6768.4 C

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