Comparison of gamma-ray exposure rate measurements at Bikini Atoll

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A radiological survey of Bikini and Eneu Islands of the Bikini Atoll was conducted during June 1975 to assess the potential radiation doses that may be received by the returning Bikinians. Bikini Atoll was one of the U.S. nuclear weapons testing sites in the Pacific. An integral part of the survey included measurements of the gamma-ray exposure rates at 1 m above the ground with portable NaI instruments at nearly 2700 locations on the two islands. For comparison purposes, similar measurements were made with a pressurized ion chamber at approximately 200 locations, and with LiF and CaF$sub 2$:Dy thermoluminescent dosimeters ... continued below

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Pages: 4

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Gudiksen, P.H. & Crites, T.R. November 21, 1975.

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A radiological survey of Bikini and Eneu Islands of the Bikini Atoll was conducted during June 1975 to assess the potential radiation doses that may be received by the returning Bikinians. Bikini Atoll was one of the U.S. nuclear weapons testing sites in the Pacific. An integral part of the survey included measurements of the gamma-ray exposure rates at 1 m above the ground with portable NaI instruments at nearly 2700 locations on the two islands. For comparison purposes, similar measurements were made with a pressurized ion chamber at approximately 200 locations, and with LiF and CaF$sub 2$:Dy thermoluminescent dosimeters (TLDs) at 80 locations. The results indicate that the NaI scintillators overresponded because of their nonlinear energy characteristics. The responses of the LiF dosimeters and the pressurized ion chamber agreed to within 13 percent. Attenuation studies with LiF TLDs indicated that roughly 25 percent of the total free air exposure rate at 1 m was due to beta radiation. (auth)

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Pages: 4

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Dep. NTIS

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  • 9. topical symposium on operational health physics, Denver, Colorado, USA, 9 Feb 1976

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  • Report No.: UCRL--77532
  • Report No.: CONF-760202--18
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 4128558
  • Archival Resource Key: ark:/67531/metadc872768

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  • November 21, 1975

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  • Sept. 16, 2016, 12:32 a.m.

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  • Oct. 18, 2016, 1:23 p.m.

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Gudiksen, P.H. & Crites, T.R. Comparison of gamma-ray exposure rate measurements at Bikini Atoll, article, November 21, 1975; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc872768/: accessed August 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.