scholarly journals Electron capture beta decay of partially polarized nuclei

2019 ◽  
Vol 34 (17) ◽  
pp. 1950129
Author(s):  
R. Basak ◽  
V. I. Tsifrinovich
Keyword(s):  
Hyperfine Field ◽  
Electron Capture ◽  
Beta Decay ◽  
Neutrino Radiation ◽  
Simplifying Assumptions ◽  
Ferromagnetic Substance ◽  
Neutrino Propagation

In this paper, we compute the spin excess for the neutrinos radiated in the process of electron capture beta decay of partially polarized nuclei. The results of computation are presented for the [Formula: see text] nuclei polarized by the strong hyperfine field in a ferromagnetic substance. This system was suggested as a possible source of monoenergetic neutrino radiation with a preferable direction of neutrino propagation. We directly compute the spin excess of radiated neutrinos and show that it is slightly greater than that estimated previously under simplifying assumptions.

scholarly journals Search for Double Beta Decay of 106Cd with an Enriched 106CdWO4 Crystal Scintillator in Coincidence with CdWO4 Scintillation Counters

Universe ◽  
2020 ◽  
Vol 6 (10) ◽  
pp. 182
Author(s):  
Pierluigi Belli ◽  
R. Bernabei ◽  
V.B. Brudanin ◽  
F. Cappella ◽  
V. Caracciolo ◽  
...  
Keyword(s):  
Electron Capture ◽  
Beta Decay ◽  
Ground State ◽  
Half Life ◽  
Double Beta Decay ◽  
Cadmium Tungstate ◽  
Positron Emission ◽  
Double Electron ◽  
Theoretical Predictions ◽  
Crystal Scintillator

Studies on double beta decay processes in 106Cd were performed by using a cadmium tungstate scintillator enriched in 106Cd at 66% (106CdWO4) with two CdWO4 scintillation counters (with natural Cd composition). No effect was observed in the data that accumulated over 26,033 h. New improved half-life limits were set on the different channels and modes of the 106Cd double beta decay at level of limT1/2∼1020−1022 yr. The limit for the two neutrino electron capture with positron emission in 106Cd to the ground state of 106Pd, T1/22νECβ+≥2.1×1021 yr, was set by the analysis of the 106CdWO4 data in coincidence with the energy release 511 keV in both CdWO4 counters. The sensitivity approaches the theoretical predictions for the decay half-life that are in the range T1/2∼1021−1022 yr. The resonant neutrinoless double-electron capture to the 2718 keV excited state of 106Pd is restricted at the level of T1/20ν2K≥2.9×1021 yr.

Tensor Interaction Effects on Stellar Electron Capture and Beta-Decay Rates

2020 ◽  
Vol 83 (2) ◽  
pp. 143-160
Author(s):  
A. A. Dzhioev ◽  
S. V. Sidorov ◽  
A. I. Vdovin ◽  
T. Yu. Tretyakova
Keyword(s):  
Electron Capture ◽  
Beta Decay ◽  
Interaction Effects ◽  
Tensor Interaction ◽  
Decay Rates

The Evolution toward Electron Capture Supernovae: The Flame Propagation and the Pre-bounce Electron–Neutrino Radiation

2019 ◽  
Vol 871 (2) ◽  
pp. 153 ◽  
Author(s):  
Koh Takahashi ◽  
Kohsuke Sumiyoshi ◽  
Shoichi Yamada ◽  
Hideyuki Umeda ◽  
Takashi Yoshida
Keyword(s):  
Electron Capture ◽  
Flame Propagation ◽  
Electron Neutrino ◽  
Neutrino Radiation

Determination of the Electron Neutrino Mass from Experiments on Electron-Capture Beta-Decay

1982 ◽  
Author(s):  
B. Jonson ◽  
J. U. Andersen ◽  
G. J. Beyer ◽  
G. Charpak ◽  
A. De Rújula ◽  
...  
Keyword(s):  
Electron Capture ◽  
Beta Decay ◽  
Neutrino Mass ◽  
Electron Neutrino

scholarly journals Electron Capture and Beta-Decay Rates for the Collapse of O+Ne+Mg Cores

2014 ◽  
Vol 66 ◽  
pp. 07011 ◽  
Author(s):  
Yi Hua Lam ◽  
Gabriel Martínez-Pinedo ◽  
Karlheinz Langanke ◽  
Samuel Jones ◽  
Raphael Hirschi ◽  
...  
Keyword(s):  
Electron Capture ◽  
Beta Decay ◽  
Decay Rates

The low-temperature rate of electron capture beta decay in magnetic materials

1996 ◽  
Vol 79 (8) ◽  
pp. 5716
Author(s):  
L. M. Folan ◽  
V. I. Tsifrinovich ◽  
V. A. Sheverev
Keyword(s):  
Low Temperature ◽  
Magnetic Materials ◽  
Electron Capture ◽  
Beta Decay ◽  
Temperature Rate

Electron Capture/Beta-Decay Ratio inK40

1950 ◽  
Vol 79 (6) ◽  
pp. 1014-1014 ◽  
Author(s):  
T. Gráf
Keyword(s):  
Electron Capture ◽  
Beta Decay

scholarly journals Competition of Electron Capture and Beta‐Decay Rates in Supernova Collapse

2000 ◽  
Vol 126 (2) ◽  
pp. 493-499 ◽  
Author(s):  
G. Martinez‐Pinedo ◽  
K. Langanke ◽  
D. J. Dean
Keyword(s):  
Electron Capture ◽  
Beta Decay ◽  
Decay Rates ◽  
Supernova Collapse
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