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Average energy needed to produce an electron-hole pair in GaSe nuclear particle detectors

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4 Author(s)
Sakai, E. ; JAERI, Ibaraki, Japan ; Nakatani, H. ; Tatsuyama, C. ; Takeda, F.

Gallium selenide (GaSe) detectors, which were fabricated by evaporating small electrodes of various metal films (Au, Al, In, In+Hg, Ag, and Sn) onto 50- to 150- mu m-thick plates cleaved from Bridgman-grown crystals, have been tested. One detector exhibited pulse heights that corresponded to 4.5 eV, possibly 4.0 to 4.3 eV, as an average energy necessary to produce an electron-hole pair for 5.5-MeV alpha-particle irradiation. These measured values are smaller than the 6.3 eV predicted by the Klein formula.<>

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Nuclear Science, IEEE Transactions on  (Volume:35 ,  Issue: 1 )