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Grau Carles A, Kossert K, Grau Malonda A. Determination of the shape factor of (90)Sr by means of the cutoff energy yield method. Appl Radiat Isot 2008; 66:1021-5. [PMID: 18356061 DOI: 10.1016/j.apradiso.2008.02.049] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Usually, Kurie plots are used to analyze beta-spectra shape-factor functions measured by means of semiconductor and magnetic spectrometers. A drawback of these techniques is the occurrence of self-absorption within the samples through which the emission spectrum is altered. In liquid-scintillation samples self-absorption does not occur, but the poor energy resolution makes the analysis of the spectra difficult. To overcome this problem, two resolution-invariant observables are used for determining the shape-factor function of (90)Sr: (1) the maximum point energy and (2) the cutoff energy yield. The measured shape-factor function of (90)Sr agrees with the one which is predicted by theory for the first-forbidden unique transition.
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Affiliation(s)
- A Grau Carles
- Instituto de Matemáticas y Física Fundamental, Dcho. 211, C/Serrano 113b, 28006 Madrid, Spain.
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Kossert K, Schrader H. Activity standardization by liquid scintillation counting and half-life measurements of. Appl Radiat Isot 2004; 60:741-9. [PMID: 15082054 DOI: 10.1016/j.apradiso.2003.12.009] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2003] [Revised: 12/04/2003] [Accepted: 12/30/2003] [Indexed: 11/17/2022]
Abstract
Radioactive 90Y was standardized by means of 4piBeta liquid scintillation efficiency tracing with a two-phototube counting system. The efficiencies of 90Y and the tracer 3H are related by the CIEMAT/NIST method. The dependence of the calculated efficiency on various shape factors and the importance of accurately measuring the radionuclide impurity of 90Sr are discussed. The half-life of 90Y was measured with improved accuracy by means of a liquid scintillation counting and a 4pi ionization chamber measuring system, and an average value T1/2 = 64.053(20) h was found.
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Affiliation(s)
- K Kossert
- Department 6.1, Physikalisch-Technische Bundesanstalt, Bundesallee 100, Braunschweig D-38116, Germany.
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Fischbeck HJ. Intensities of Inner Beta Groups inCa47and Shapes of Nonstatistical Allowed Outer Groups inCa47andP32. ACTA ACUST UNITED AC 1968. [DOI: 10.1103/physrev.173.1078] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Daniel H, Kaschl GT, Schmitt H, Springer K. Shapes of Allowed and Unique First-Forbiddenβ-Ray Spectra:In114,K42,Rb86,Sr90, andY90. ACTA ACUST UNITED AC 1964. [DOI: 10.1103/physrev.136.b1240] [Citation(s) in RCA: 49] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Langer LM, Spejewski EH, Wortman DE. Precise Shape Measurements of Beta Spectra ofY90andY91. ACTA ACUST UNITED AC 1964. [DOI: 10.1103/physrev.135.b581] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Pearson JM. Induced Pseudoscalar Interaction and the Low-Energy Anomalies in Beta Spectra. ACTA ACUST UNITED AC 1962. [DOI: 10.1103/physrev.126.1100] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Ullman JD, Frauenfelder H, Lipkin HJ, Rossi A. Determination of Electron and Positron Helicity with Møller and Bhabha Scattering. ACTA ACUST UNITED AC 1961. [DOI: 10.1103/physrev.122.536] [Citation(s) in RCA: 44] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Fehrentz D, Daniel H. Einfluss Der Quellendicke Auf Die Gemessene Form Eines Beta-Spektrums. ACTA ACUST UNITED AC 1961. [DOI: 10.1016/s0029-554x(61)80097-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Langer LM, Smith DR. Shape of Beta Spectra of Once Forbidden Transitions in the Decays ofGa72,La140,Eu152,Eu154, andSb124. ACTA ACUST UNITED AC 1960. [DOI: 10.1103/physrev.119.1308] [Citation(s) in RCA: 70] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Hamilton JH, Langer LM, Smith WG. Evidence for Small Deviations in the Allowed Positron Spectrum ofZr89. ACTA ACUST UNITED AC 1960. [DOI: 10.1103/physrev.119.772] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Conway DC, Johnston WH. Determination of the Low-Energy Region of the Tritium Beta Spectrum. ACTA ACUST UNITED AC 1959. [DOI: 10.1103/physrev.116.1544] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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