Model 3030 & 3030E Series Technical Manual Section 7
Ludlum Measurements, Inc. Page 42 November 2017
Starting High Voltage: 750
Starting High Voltage: 950
High Voltage Increment: 25
Source Count Time (min): 0001.0
Background Count Time (min): 1.0
Plateau Count Mode: SCALER
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| ALPHA BETA
HV | Source (Beta) Background Eff CrossTalk | Source (Alpha) Background Eff Crosstalk
--------------------------------------------------------------------------------------------------------------------------
750 11474 (764) 0 37.1% 6.4% | 3868 (3) 35 20.5% 0.1%
775 11613 (533) 0 37.6% 4.3% | 4128 (1) 36 21.9% 0.0%
800 11940 (469) 0 38.6% 3.6% | 4523 (0) 43 24.0% 0.0%
825 11657 (377) 0 37.7% 2.8% | 4753 (4) 50 25.1% 0.1%
850 11762 (322) 0 38.1% 2.3% | 4969 (2) 51 26.3% 0.0%
875 11854 (335) 0 38.4% 2.1% | 5009 (4) 81 26.4% 0.1%
900 11927 (338) 0 38.6% 1.4% | 5066 (1) 167 26.2% 0.0%
925 11898 (390) 0 38.5% 0.0% | 5285 (0) 477 25.7% 0.0%
950 11945 (493) 1 38.7% 0.0% | 5501 (1) 1196 23.0% 0.0%
Ludlum Measurements, Inc.
Model 3030 MDA Calculation Data
-----------------------------------------------------------------------
01/15/2001
11:05:07 AM
Alpha Background(cpm): 1
Beta Background (cpm): 44
Alpha Efficiency %: 15
Beta Efficiency %: 25
Confidence Level: 90%
Count Time Alpha MDA(dpm) Beta MDA(dpm)
---------------------------------------------------------------------
0.1 237.3 334.0
0.5 65.7 139.5
1 42.2 107.0
2 30.0 88.7
5 22.3 76.7
10 19.7 72.4
60 17.5 68.8
Ludlum Measurements, Inc.
Model 3030 Sample Data
-----------------------------------------------------------------------
01/15/2001
12:05:07 AM
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Sample # | Date | Time | Alpha Count | Beta Count | Count Time | Type | Comment
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001 01/15/2001 08:01:00 1 44 0001.0 s
002 01/15/2001 08:02:00 0 38 0001.0 s
003 01/15/2001 08:03:00 0 41 0001.0 s
004 01/15/2001 08:04:00 1 42 0001.0 s
005 04/17/2001 08:00:00 0 44 0001.0 s QC Check
005 01/17/2001 08:02:00 0 38 0001.0 s
006 01/17/2001 08:03:00 0 41 0001.0 s
007 01/17/2001 08:04:00 1 42 0001.0 s
008 04/18/2001 08:00:00 0 44 0001.0 s QC Check
009 04/19/2001 08:00:00 0 40 0001.0 s Bkgnd Upd
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