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Calculations on the Number of Neutrons in the Atmosphere

Calculations on the Number of Neutrons in the Atmosphere with spectrometers using G-M tubes, and the results are not in close agreement. To check the reported values, both conversion and photoelectrons for each gamma-ray have been observed in magnetic photographic spectrometers. The K electron lines are clearly resolved, being separated by several millimeters with the resolving power used. The relative intensities of the three K lines appear to be approximately 10, 5, and 7, for the 1.121, 1.189, and 1.219 Mev gamma-rays, respectively. The various results are summarized in Table I, with the initials of the authors at the top TABLE I. Gamma-rays from Ta'81. R. W.& B. P. W.b G. C., Present 1.13 Mev 1.133 Mev 1.12 Mev 1.121 Mev a W. Rail and R. Wilkinson, Phys. Rev. 71, 321 (1947). b Beach, Peacock, and Wilkinson, Phys. Rev. 75, 211 (1949). e C. Goddard and C. Cook, Phys. Rev. 76, 1419 (1949). of the vertical column that contains their respective data. It is believed that the uncertainty in the presently reported values is not greater than 2 kev for each of the three gamma-energies. t This project was supported jointly by the AEC and ONR. I J. Cork, Phys. Rev. 72, 581 (1947). Cork, Keller, Rutledge, http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review American Physical Society (APS)

Calculations on the Number of Neutrons in the Atmosphere

Physical Review , Volume 81 (4) – Feb 15, 1951

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Publisher
American Physical Society (APS)
Copyright
Copyright © 1951 The American Physical Society
ISSN
1536-6065
DOI
10.1103/PhysRev.81.643
Publisher site
See Article on Publisher Site

Abstract

with spectrometers using G-M tubes, and the results are not in close agreement. To check the reported values, both conversion and photoelectrons for each gamma-ray have been observed in magnetic photographic spectrometers. The K electron lines are clearly resolved, being separated by several millimeters with the resolving power used. The relative intensities of the three K lines appear to be approximately 10, 5, and 7, for the 1.121, 1.189, and 1.219 Mev gamma-rays, respectively. The various results are summarized in Table I, with the initials of the authors at the top TABLE I. Gamma-rays from Ta'81. R. W.& B. P. W.b G. C., Present 1.13 Mev 1.133 Mev 1.12 Mev 1.121 Mev a W. Rail and R. Wilkinson, Phys. Rev. 71, 321 (1947). b Beach, Peacock, and Wilkinson, Phys. Rev. 75, 211 (1949). e C. Goddard and C. Cook, Phys. Rev. 76, 1419 (1949). of the vertical column that contains their respective data. It is believed that the uncertainty in the presently reported values is not greater than 2 kev for each of the three gamma-energies. t This project was supported jointly by the AEC and ONR. I J. Cork, Phys. Rev. 72, 581 (1947). Cork, Keller, Rutledge,

Journal

Physical ReviewAmerican Physical Society (APS)

Published: Feb 15, 1951

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