Comparison of the TDCR method and the CIEMAT/NIST method for ...

ε
electron spectrum S(E)
1 PMT:
2 PMTs:
3 PMTs:
ε
ε
ε
1
2
=
=
E
max
E
Free parameter model
= −
∫
0
max
∫
0
E
max
T ∫
0
−EQ(
E)/ M
SE ( )(1 e ) dE
S(
E)(
1−
e
S(
E)(
1−
−EQ(
E)
/ 2M
logical sum of double coincidences in a system with 3 PMTs:
O. Nähle and K. Kossert Comparison of TDCR and CN for β emitters
e
−EQ(
E)
/ 3
M
)
)
2
3
dE
dE
D =
Emax
∫
0
−EQ( E)/3M2 −EQ(
E)/3M3 SE ( )(3(1 −e) −2(1 −e)
) dE