talk - International Workshop on Double Beta Decay and Neutrino
talk - International Workshop on Double Beta Decay and Neutrino
talk - International Workshop on Double Beta Decay and Neutrino
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Pulse Shape Discriminati<strong>on</strong><br />
Particle Identificati<strong>on</strong> between <strong>and</strong> rays<br />
-ray<br />
-ray<br />
: 214 Po 7.6MeV(E e =2.5MeV)<br />
: 208 Tl 2.6MeV<br />
ref:Shape Indicator<br />
(PRC67(2003) 014310)<br />
Shape Indicator<br />
4<br />
3<br />
2<br />
1<br />
0<br />
-1<br />
-2<br />
-3<br />
-ray events<br />
-ray events<br />
-4<br />
0 500 1000 1500 2000 2500 3000 3500 4000<br />
Energy(keV)<br />
Shape Indicator<br />
Shape Indicator<br />
mean:0(α-ray)<br />
-1.2(γ-ray)<br />
:0.42<br />
・97 % rejecti<strong>on</strong> efficiency at 2.6MeV(γ ray:85%)<br />
→95% (+) at 4.27MeV(γ:85%)
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