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Incoherent scattering of gamma rays by K electrons
Physics Letters A, 1970Abstract The integrated K electron photon scattering cross sections obtained from the available differential cross sections for energies from 280 to 1002 keV with Z varying from 50 to 82 are found to be appreciably lower than the free electron values.
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Refrigeration for low temperature (77 K) electronics
Proceedings of the Workshop on Low Temperature Semiconductor Electronics, 2003The authors discuss the present state of the art and options that are being pursued to develop cryogenic coolers that will help make cryogenic electronic systems competitive. The discussion focuses on commercial systems operating in the 77-K temperature region with cooling requirements of about 10 to 1000 W.
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K-electron capture probability to the 136 keV level in the decay of 57Co
International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes, 1990Abstract The K-electron capture probability to 136 keV in the decay of 57 Co has been determined by K x-ray—γ-ray sum peaks observed in single HPGe (28.27 mm 2 × 5.5 mm ) detector. The results are independent of fluorescence yields and detector efficiencies.
Kulwant Singh, T.S. Gill, K. Singh
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The L/K electron capture ratio in first-forbidden 81gKr decay
Nuclear Physics A, 1974Abstract The L/K electron capture (EC) ratio of 81g Kr was measured to be 0.146±0.005 utilizing the wall-less, anticoincidence, multiwire proportional counter technique and a reactor-produced, mass separated 81g Kr source. From this value, the Q EC and log ft values were determined to be 305 −29 +38 keV and 11.6 respectively, assuming EC ...
W.M. Chew +4 more
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K-electron capture probability to 165 keV level in the decay of 139Ce
Applied Radiation and Isotopes, 1994Abstract The sum peak method has been applied to calculate electron capture probability to the 165 keV level in the decay of 139Ce. Using this value of PK, the mass difference between 139Ce and 139La is found to be 270 ± 15.
Vijay Kumar, null Kawaldeep, K. Singh
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Ionization of K-electrons in solids by relativistic heavy particles
Radiation Effects, 1980Abstract The theory of K-electron ionization probabilities by heavy relativistic particles (protons, mesons, ions) as a function of an impact parameter is treated in the virtual photon approximation. This approximation can be used to calculate the K-X-ray yield excited by channeled negative and positive particles.
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Binding effect due to K electrons observed on a Compton profile of Si
Physics Letters A, 1972Abstract Compton profiles were measured on Si at E γ = 59.6 keV with a solid-state detector. The edge of the binding effect due to K electrons was identified because its energy value is independent of the scattering angle.
T. Fukamachi, S. Hosoya
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Measurement of the L+M+…/K electron capture ratio in the decay of 125I
Nuclear Physics, 1966Abstract Using the “well-type” internal source scintillation spectrometer technique, a value of 0.253±0.005 was obtained for the L+M+…/K electron capture ratio in the decay of 125 I to the 35.4 keV excited state of 125 Te. This corresponds to an atomic mass difference of (153 ± 5) keV between the ground states of 125 I and 125 Te.
K.M. Smith, G.M. Lewis
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Double ionization of the atomic K shell in the annihilation of a positron with a bound K electron
Journal of Physics B: Atomic, Molecular and Optical Physics, 1992The double ionization of the atomic K shell in the process of annihilation of a polarized positron with a bound K electron is studied. Analytical expressions valid in the relativistic energy region for the total and differential cross sections are obtained.
A I Mikhailov, S G Porsev
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