Precise measurement of the β decay and electron capture ofNa22,Au198, andAu196in low-temperature metal hosts, and reexamination of lifetime modifications

2008 ◽  
Vol 77 (6) ◽  
Author(s):  
Götz Ruprecht ◽  
Christof Vockenhuber ◽  
Lothar Buchmann ◽  
Russell Woods ◽  
Chris Ruiz ◽  
...  
Keyword(s):  
Low Temperature ◽  
Electron Capture ◽  
Precise Measurement ◽  
Β Decay

scholarly journals Electron-capture modes with realistic nuclear structure calculations

2019 ◽  
Vol 21 ◽  
pp. 4
Author(s):  
P. G. Giannaka ◽  
T. S. Kosmas
Keyword(s):  
Electron Capture ◽  
Cross Sections ◽  
Nuclear Reactions ◽  
Random Phase ◽  
Point Of View ◽  
Electron Neutrino ◽  
Β Decay ◽  
Decay Modes ◽  
Theory Point ◽  
Nuclear Structure Calculations

Nuclear electron capture posses prominent position among other weak interaction processes occuring in explosive nucleosynthesis. In particular, this process plays important role in the core-colapse of massive stars by modifying the electron to baryon ratio Ye. From a nuclear theory point of view, such processes may be studied by using the same nuclear methods (e.g. the quasi-particle random phase approximation, QRPA), employed in the present work with these used for the one-body charge changing nuclear reactions (β-decay modes, charged-current electron-neutrino absorption by nuclei, etc). In this work we calculate e−-capture cross sections on 56Fe using two different approaches. At first, original cross section calculations are perfored by using the pn-QRPA method considering all the accessible transitions of the final nucleus 56Mn. Secondly, we evaluate the Gamow-Teller strength distributions and obtain the cross sections at the limit of zero-momentum transfer. The agreement between the two methods is very good.

Electron-capture decay ofTc100and the double-β decay ofMo100

1993 ◽  
Vol 47 (6) ◽  
pp. 2910-2915 ◽  
Author(s):  
A. García ◽  
Y-D Chan ◽  
M. T. F. da Cruz ◽  
R. M. Larimer ◽  
K. T. Lesko ◽  
...  
Keyword(s):  
Electron Capture ◽  
Β Decay ◽  
Electron Capture Decay ◽  
Double Β Decay

scholarly journals Precise measurement of 2ν2β decay of 100Mo with Li2MoO4 low temperature detectors: Preliminary results

2019 ◽  
Author(s):  
E. Armengaud ◽  
C. Augier ◽  
A. S. Barabash ◽  
F. Bellini ◽  
A. Beno ◽  
...  
Keyword(s):  
Low Temperature ◽  
Precise Measurement ◽  
Low Temperature Detectors ◽  
Preliminary Results

scholarly journals Results from the Cuore Experiment †

Universe ◽  
2019 ◽  
Vol 5 (1) ◽  
pp. 10 ◽  
Author(s):  
Alessio Caminata ◽  
Douglas Adams ◽  
Chris Alduino ◽  
Krystal Alfonso ◽  
Frank Avignone ◽  
...  
Keyword(s):  
Beta Decay ◽  
Energy Resolution ◽  
Half Life ◽  
Precise Measurement ◽  
Region Of Interest ◽  
Neutrinoless Double Beta Decay ◽  
Double Beta Decay ◽  
Effective Energy ◽  
Β Decay ◽  
Compact Structure

The Cryogenic Underground Observatory for Rare Events (CUORE) is the first bolometric experiment searching for neutrinoless double beta decay that has been able to reach the 1-ton scale. The detector consists of an array of 988 TeO 2 crystals arranged in a cylindrical compact structure of 19 towers, each of them made of 52 crystals. The construction of the experiment was completed in August 2016 and the data taking started in spring 2017 after a period of commissioning and tests. In this work we present the neutrinoless double beta decay results of CUORE from examining a total TeO 2 exposure of 86.3 kg yr , characterized by an effective energy resolution of 7.7 keV FWHM and a background in the region of interest of 0.014 counts / ( keV kg yr ) . In this physics run, CUORE placed a lower limit on the decay half-life of neutrinoless double beta decay of 130 Te > 1.3 · 10 25 yr (90% C.L.). Moreover, an analysis of the background of the experiment is presented as well as the measurement of the 130 Te 2 ν β β decay with a resulting half-life of T 1 / 2 2 ν = [ 7.9 ± 0.1 ( stat . ) ± 0.2 ( syst . ) ] × 10 20 yr which is the most precise measurement of the half-life and compatible with previous results.

scholarly journals Strong neutrino cooling by cycles of electron capture and β− decay in neutron star crusts

Nature ◽  
2013 ◽  
Vol 505 (7481) ◽  
pp. 62-65 ◽  
Author(s):  
H. Schatz ◽  
S. Gupta ◽  
P. Möller ◽  
M. Beard ◽  
E. F. Brown ◽  
...  
Keyword(s):  
Neutron Star ◽  
Electron Capture ◽  
Β Decay

scholarly journals Electron capture detector based on a non-radioactive electron source: operating parameters vs. analytical performance

2017 ◽  
Vol 6 (2) ◽  
pp. 381-387 ◽  
Author(s):  
Erik Bunert ◽  
Ansgar T. Kirk ◽  
Jens Oermann ◽  
Stefan Zimmermann
Keyword(s):  
Electron Capture ◽  
Detection Limits ◽  
Electron Source ◽  
Analytical Performance ◽  
Electron Capture Detector ◽  
Operating Parameters ◽  
Free Electrons ◽  
Β Decay ◽  
Radioactive Materials ◽  
Electron Capture Detectors

Abstract. Gas chromatographs with electron capture detectors are widely used for the analysis of electron affine substances such as pesticides or chlorofluorocarbons. With detection limits in the low pptv range, electron capture detectors are the most sensitive detectors available for such compounds. Based on their operating principle, they require free electrons at atmospheric pressure, which are usually generated by a β− decay. However, the use of radioactive materials leads to regulatory restrictions regarding purchase, operation, and disposal. Here, we present a novel electron capture detector based on a non-radioactive electron source that shows similar detection limits compared to radioactive detectors but that is not subject to these limitations and offers further advantages such as adjustable electron densities and energies. In this work we show first experimental results using 1,1,2-trichloroethane and sevoflurane, and investigate the effect of several operating parameters on the analytical performance of this new non-radioactive electron capture detector (ECD).

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

Precise measurement of theX K emission rate following the electron capture-decay of54Mn-fluorescence yield ? K of Cr

1978 ◽  
Vol 284 (4) ◽  
pp. 389-397 ◽  
Author(s):  
P. Magnier ◽  
J. Bouchard ◽  
M. Blondel ◽  
J. Legrand ◽  
J. P. Perolat ◽  
...  
Keyword(s):  
Electron Capture ◽  
Precise Measurement ◽  
Emission Rate ◽  
Fluorescence Yield ◽  
Electron Capture Decay
Sign in / Sign up

Export Citation Format

Share Document