1108051 NSA-33-009352 Comparison of gamma-ray exposure rate measurements at Bikini Atoll Gudiksen, P.H.; Crites, T.R. California Univ., Livermore (USA). Lawrence Livermore Lab. Corp. Source Code: 9500007 Publication Date: 21 Nov 1975 4p. t Conference title: 9. topical symposium on operational health physics Conference location: Denver, Colorado, Conference date: 9 Feb 1976 Country of Publication: United States Primary Report No.: UCRL--77532 Secondary Report No.: CONF-760202--18 Journal Announcement: NSA33 Availability: Dep. NTIS $4.50. Document Type: Language: Subfile: Abstracts) USA Conference paper English NSA (Nuclear Science Abstracts); ERA (Energy Research Work Location: United States Contract No.: W-7405-ENG-48 A radiological survey of Bikini and Eneu Islands of the Bikini Atoll was conducted during June 1975 to assess the potential radiation doses that may be received by the returning Bikinians. Bikini Atoll was one of the U.S. nuclear weapons testing sites in the Pacific. An integral part of the survey included measurements of the gamma-ray exposure rates at 1m above the ground with portable NaI instruments at nearly 2700 locations on the two islands. For comparison purposes, similar measurements were made with a pressurized ion chamber at approximately 200 locations, and with LiF and CaFSsub 2$: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 1m was due to beta radiation. (auth) Descriptors: *BIKINI--~*RADIATION MONITORING; *GAMMA DOSIMETRY--* THERMOLUMINESCENT DOSEMETERS; *IONIZATION CHAMBERS--*PERFORMANCE; * THERMOLUMINESCENT DOSEMETERS--*PERFORMANCE; COMPARATIVE EVALUATIONS; ENVIRONMENT; RADIOACTIVITY; SENSITIVITY Subject Codes (NSA): N46120* Instrumentation--Radiation Detection Instruments--Radiation Dosimeters; N44300 Environmental & Barth Sciences-Radioactivity Monitoring & Transport (EDB): 440102* Instrumentation--Radiation Instrumentation 20/5/6 €?207987 (Item 6 from file: 109) NSA-33-009288 “Wilson, D.W.; Ng, ‘Evaluation of plutonium at Eniwetok Atoll Y¥.C.; Robinson, cwuniv. of California, Livermore / W.L. . Health Phys., v. 29, no. 4, pp. 599-611 Publication Date: Oct 1975 Coden: HLTPA Conference title: Proceedings of the second Los Alamos life sciences symposium Conference location: Los Alamos, NM, USA Conference date: 22 May 1974 Country of Publication: United Kingdom Journal Announcement: NSA33 Document Type: Conference paper Language: English Subfile: Abstracts) NSA (Nuclear Science Abstracts); Work Location: United States ERA (Energy Research An extensive survey was carried out in 1972 to 1973 to assess the current radiological status of Eniwetok Atoll. The radionuclides detected in the Atoll environment were studied for their potential contributions to the S5O35lb Subject Codes cpRadiation Dosemeters