Comparison of the HIREGS III
& IV instrumental background
Figure: Measured background spectrum of HIREGS III & HIREGS IV
Figure : Comparison of the continuum background of HIREGS III and HIREGS
IV.
The table below show the comparison of Ge detector measured rates (in
counts s-1 cm-3) of HIREGS III and HIREGS IV.
| Flight |
20 keV < E < 1 MeV
|
198 keV background line
|
511 keV background line
|
continuum @ 511 keV
|
| HIREGS III |
0.1579
|
0.0111
|
1.29 10-3
|
7.33 10-2
|
| HIREGS IV |
0.2519
|
0.0124
|
2.16 10-3
|
9.35 10-2
|
| Ratio IV/III |
1.5925
|
1.117
|
1.6744
|
1.2756
|
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