Results 231 to 240 of about 829,437 (269)

Decay scheme of 188Pt, Q-value and K-electron-capture fractions PK

Nuclear Physics A, 1968
Abstract The electron-capture decay of 10.2 d 188 Pt has been investigated with Ge(Li), Si(Li) and NaI(Tl) detectors, a six-gap magnetic spectrometer and coincidence techniques. Energies (in keV) and intensities (in %) of the gamma rays are K X-rays (100), 41.9(0.4), 54.8(0.3), 96.7 (0.2), 98.4(0.4), 132.8(0.30), 140.3(2.2), 187.6(19.2), 195.1(18.4),
R.J. Hanson, P.G. Hansen, H.L. Nielsen, G. Sørensen   +3 more
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High temperature (500–600 K) electronics thermal management

AIP Conference Proceedings, 1995
The functional feasibility of a variety of prototypical SiC electronic and power devices structures have recently been demonstrated. Interest in high temperature SiC devices is motivated in part by the contention of ‘‘greatly’’ simplified passive cooling’’ of such devices.
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K-electron capture to positron emission ratios in allowed transitions-a critical analysis

Journal of Physics A: Mathematical, Nuclear and General, 1973
All available experimental K/ beta + and epsilon / beta + ratios for allowed transitions are reviewed. A critical comparison is made between experimental and theoretical K/ beta + ratios. The following questions are asked: (i) can these experiments be used to derive the magnitude of a possible induced tensor interaction?
M L Fitzpatrick, K W D Ledingham, J Y Gourlay, J G Lynch   +3 more
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Relative K-electron capture probabilities in the decay of⁹⁹Rh

Journal of Physics G: Nuclear and Particle Physics, 2000
The relative K-electron capture probabilities (P K ) to the 1383.23, 896.98, 618.09, 442.78 and 322.43 keV levels in 99 Ru in the decay of 99 Rh are measured employing the X- internal sum-coincidence technique. The measured values P K 1383.23 = 0.851 ± 0.066, P K 896.98 = 0.834 ± 0.061, P K 618.09 = 0.870 ± 0.01, P K 442.78 = 0.882 ± 0.035 and P K 322 ...
N R Mishra, M V S Chandrasekhar Rao, G Satyanarayana, D L Sastry, S N Chintalapudi   +4 more
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Measurement of K-electron capture probability in the decay of⁸⁷Y

Journal of Physics G: Nuclear and Particle Physics, 1993
The K-electron capture probability for the 1/2- to 3/2- transition in the decay of 87Y to the 873.0 keV level in the daughter 87Sr was measured for the first time using an x- gamma summing method. The experimental Pk value was found to be 0.911+or-0.047, in agreement with the theoretical value of 0.878.
N V S Vara Prasad, G Sree Krishna Murty, M V S Chandrasekhar Rao, G Satyanarayana, D L Sastry, S N Chintalapudi   +5 more
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The ratio of K-electron capture to positron emission in the decay of⁹¹Mo

Journal of Physics G: Nuclear Physics, 1976
The K-capture to positron emission ratio (PK/Pbeta +) for the decay of 91Mo to the ground state of 91Nb has been measured and found to be about 9% lower than the theoretical value. This tends to agree with a recent review which indicated that experimental PK/Pbeta + ratios disagree with theory, particularly for high-Z nuclei.
M L Fitzpatrick, K W D Ledingham, M Campbell, A D Baillie, J Y Gourlay, J G Lynch   +5 more
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Measurement by Cyclotron Resonance of Molecular Cross Sections for Elastic Collisions with 295°K Electrons

The Journal of Chemical Physics, 1962
Cyclotron resonance absorption is used to obtain molecular scattering cross sections for electrons at 295°K. The electrons were present in active nitrogen obtained by passing N2 through a microwave discharge, and various gases were introduced into the active nitrogen downstream from the discharge.
K. D. Bayes, D. Kivelson, S. C. Wong
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Measurement of K-electron capture probabilities to the levels of185Re following the EC decay of185Os

Czechoslovak Journal of Physics, 1993
K to total capture ratios have been measured explicitly for the first time from the decay of185Os to 880, 874, 717 and 646 keV levels in185Re using the technique of gamma-KX-ray summing in a single intrinsic Ge detector. The results agree with the theoretical values.
G. P. S. Sahota, H. S. Sahota, T. Iwashita   +2 more
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Nuclear matrix elements from L/K electron capture ratios in 59Ni decay

Nuclear Physics A, 1974
Abstract Using a recent theoretical method, the ratio of nuclear matrix elements R = ( v F 0 220 −√ 3 2 A F 0 221 / v F 0 211 ) was determined to be either 20.50 +0.35 −0.55 or 25.22 +0.28 −0.17 in the second-forbidden nonunique decay of 8 × 10 4 y 59 Ni.
W.M. Chew, A.C. Xenoulis, R.W. Fink, J.J. Pinajian   +3 more
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Subshell Resolved L-K Electron Transfer and Ionization of Yb with Si Ion Impact

Physica Scripta, 1999
We have measured subshell resolved L-K electron transfer cross sections from the L subshell of the Yb target to the vacant K-shell of the Si projectile at energies varying between 2–4.5 MeV/A. In addition, the L subshell ionization cross sections are also obtained for Yb.
A. K. Saha, L. C. Tribedi, B. B. Dhal, U. Tiwari, P. N. Tandon   +4 more
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