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James A. Van Allen lab journal, March 1958-September 1959
Page 161
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1/12/1959 Conversation with C. McIlwain on the detection and identification of trapped particles (a) A proportional counter with perhaps three pulse height levels of discrimination and appropriate scalers. (b) Scintillation counter with very thin crystal; e.g ~ 0.005 inch CsI plus pulse height analysis. (c) Ionization Chamber with Soviet type condenser discharge scheme plus G. M. tube.
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1/12/1959 Conversation with C. McIlwain on the detection and identification of trapped particles (a) A proportional counter with perhaps three pulse height levels of discrimination and appropriate scalers. (b) Scintillation counter with very thin crystal; e.g ~ 0.005 inch CsI plus pulse height analysis. (c) Ionization Chamber with Soviet type condenser discharge scheme plus G. M. tube.
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