|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'506'133
Articles rated: 2609
27 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Determination of the neutrino mass by electron capture in 163 Holmium and the role of the three-hole states in 163 Dysprosium | | Amand Faessler
; Christian Enss
; Loredana Gastaldo
; F. Simkovic
; | | Date: |
8 Mar 2015 | | Abstract: | 163 Holmium to 163 Dysprosium is probably due to the small Q value of about
2.5 keV the best case to determine the neutrino mass by electron capture. The
energy of the Q value is distributed between the excitation of Dysprosium (and
the neglected small recoil of Holmium) and the relativistic energy of the
emitted neutrino including the restmass. The reduction of the upper end of the
deexcitation spectrum of Dysprosium below the Q value allows to determine the
neutrino mass. The excitation of Dysprosium can be calculated in the sudden
approximation of the overlap of the electron wave functions of Holmium minus
the captured electron and one-, two-, three- and multiple hole-excitations in
Dysprosium. Robertson and the author have calculated the influence of the
two-hole states on the Dysprosium deexitation spectrum. Here for the first time
the influence of the three-hole states on the deexcitation bolometer spectrum
of 163 Dysprosium is presented. The electron wave functions and the overlaps
are calculated selfconsitently in a fully relativistic and antisymmetrized
Dirac-Hartree-Fock approach in Holmium and in Dysprosium. The electron orbitals
in Dysprosium are determined including the one-hole states in the
selfconsistent iteration. The influence of the three-hole states on the
deexcitation (by X-rays and Auger electrons) spectrum is visible and
surprisingly large. It could be important for the determination of the neutrino
mass, which must be determined by fitting the neutrino mass and the Q value to
the upper end of the spectrum, which could be modified by the one-, the two-
and even the three-hole states. | | Source: | arXiv, 1503.2282 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER