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James A. Van Allen journal, December 1954-October 1955
Page 57
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NaI([Tl?]) crystals for summer 1955 0.6 inch diameter x 0.0625 inch thick. with 0.001 inch Aluminum foil. Max. can diameter 0.85 State University of Iowa will put Po-alpha source on inside of foil. Foil is to be in direct contact with crystal. 16 crystals at $560.00 ￣￣￣￣￣￣￣￣￣￣￣ Balloon Data from Bill Stroud: Dewey & Almy Chemical Company Cambridge, Massachusetts 7500 grams Project officer: B. A. Nickerson of D.A. Cost: $200 >115,000 feet "guaranteed" / Day time only
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NaI([Tl?]) crystals for summer 1955 0.6 inch diameter x 0.0625 inch thick. with 0.001 inch Aluminum foil. Max. can diameter 0.85 State University of Iowa will put Po-alpha source on inside of foil. Foil is to be in direct contact with crystal. 16 crystals at $560.00 ￣￣￣￣￣￣￣￣￣￣￣ Balloon Data from Bill Stroud: Dewey & Almy Chemical Company Cambridge, Massachusetts 7500 grams Project officer: B. A. Nickerson of D.A. Cost: $200 >115,000 feet "guaranteed" / Day time only
Van Allen Papers
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