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Absolute emission intensities of the gamma rays from the decay of 224Ra and 212Pb progenies and the half-life of the 212 Pb decay.
Pibida, L; Bergeron, D E; Collins, S M; Ivanov, P; Cessna, J T; Fitzgerald, R P; Mewburn-Crook, J; Zimmerman, B E; King, L.
Afiliação
  • Pibida L; National Institute of Standards and Technology, 100 Bureau Dr, MS 8462, Gaithersburg, MD, 20899-8462, USA. Electronic address: leticia.pibida@nist.gov.
  • Bergeron DE; National Institute of Standards and Technology, 100 Bureau Dr, MS 8462, Gaithersburg, MD, 20899-8462, USA. Electronic address: denis.bergeron@nist.gov.
  • Collins SM; National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW, UK; School of Mathematics and Physics, University of Surrey, Guildford, GU2 7XH, UK. Electronic address: sean.collins@npl.co.uk.
  • Ivanov P; National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW, UK. Electronic address: ivanov@npl.co.uk.
  • Cessna JT; National Institute of Standards and Technology, 100 Bureau Dr, MS 8462, Gaithersburg, MD, 20899-8462, USA. Electronic address: jeffrey.cessna@nist.gov.
  • Fitzgerald RP; National Institute of Standards and Technology, 100 Bureau Dr, MS 8462, Gaithersburg, MD, 20899-8462, USA. Electronic address: ryan.fitzgerald@nist.gov.
  • Mewburn-Crook J; National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW, UK. Electronic address: Mewburn.Crook@npl.co.uk.
  • Zimmerman BE; National Institute of Standards and Technology, 100 Bureau Dr, MS 8462, Gaithersburg, MD, 20899-8462, USA. Electronic address: brian.zimmerman@nist.gov.
  • King L; National Institute of Standards and Technology, 100 Bureau Dr, MS 8462, Gaithersburg, MD, 20899-8462, USA. Electronic address: lynne.king@nist.gov.
Appl Radiat Isot ; 205: 111171, 2024 Mar.
Article em En | MEDLINE | ID: mdl-38181577
ABSTRACT
Absolute gamma-ray emission intensities for 36 characteristic gamma rays from the decay of 224Ra, 212Pb, and their progeny were determined by measuring sources calibrated for activity by means of primary methods based on well-defined high-purity germanium (HPGe) detectors at both NIST and NPL. Results from the two laboratories agree with recent data evaluations, except for gamma rays with low emission intensities. The decay schemes have been re-balanced based on the new results. In addition, the half-life for 212Pb was measured using several HPGe detectors, ionization chambers, and a well-type NaI(Tl) detector.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2024 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2024 Tipo de documento: Article