发明名称 |
METOD FOR METNING AV SONDERFALLSHASTIGHET HOS EN BETA-EMITTERANDE STRALNINGSNUKLEID I ETT VETSKEPROV |
摘要 |
A method of measuring the disintegration rate of a beta-emitting radionuclide in a liquid sample by counting at least two differently quenched versions of the sample. In each counting operation the sample is counted in the presence of and in the absence of a standard radioactive source. A pulse height (PH) corresponding to a unique point on the pulse height spectrum generated in the presence of the standard is determined. A zero threshold sample count rate (CPM) is derived by counting the sample once in a counting window having a zero threshold lower limit. Normalized values of the measured pulse heights (PH) are developed and correlated with the corresponding pulse counts (CPM) to determine the pulse count for a normalized pulse height value of zero and hence the sample disintegration rate. |
申请公布号 |
SE7706836(L) |
申请公布日期 |
1977.12.15 |
申请号 |
SE19770006836 |
申请日期 |
1977.06.13 |
申请人 |
BECKMAN INSTRUMENTS INC |
发明人 |
HORROCKS D L |
分类号 |
G01T1/204;(IPC1-7):G01T1/20 |
主分类号 |
G01T1/204 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|