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5.2.2.2 <br />
4.2 <br />
30 keV β 0 ◦ <br />
,30µm,50µm,100µm<br />
<br />
<br />
200 ×30 <br />
B <br />
C <br />
5.2.2.3 <br />
5.6 200 <br />
<br />
<br />
(Count IC ) = 6.32 × 10 −3 × (Count Det ) − (30 ± 8) (5.1)<br />
Count Det Count IC <br />
Counts/sec<br />
−30 <br />
() = (Count Det )/(Count IC + 30) (5.2)<br />
5.2<br />
<br />
5.7 -30 <br />
<br />
5.8<br />
5.8 <br />
()=158.3±0.4(1σ) <br />
0.4/158.3=0.25%<br />
41