eprintid: 16939
rev_number: 12
eprint_status: archive
userid: 1196
dir: disk0/00/01/69/39
datestamp: 2014-06-03 12:04:10
lastmod: 2014-07-21 10:13:36
status_changed: 2014-06-03 12:04:10
type: doctoralThesis
metadata_visibility: show
creators_name: Goncharov, Mikhail Leonidovich
title: High-precision Penning-trap mass spectrometry at SHIPTRAP and PENTATRAP for neutrino physics research
subjects: ddc-530
divisions: i-130001
adv_faculty: af-13
cterms_swd: Atomic Physics
cterms_swd: Mass Spectrometry
cterms_swd: Neutrino Physics
abstract: In neutrino physics, a variety of experiments aim for the determination of the neutrino mass by means of the beta-decay and electron-capture spectra, while a detection of the neutrinoless double-electron capture would reveal the Majorana nature of neutrinos. However, a lack of knowledge on the total decay energy (Q-value) of these processes constrains present neutrino experiments.

To this end, high-precision measurements of the Q-values are obligatory. In order to find suitable nuclides for neutrinoless double-electron capture experiments, a determination of the Q-values by direct Penning-trap mass-ratio measurements on 106Pd/102Ru, 106Cd/106Pd, 144Sm/144Nd and 156Dy/156Gd with a relative precision of a few 10E−9 were performed for the first time at SHIPTRAP using the Time-of-Flight Ion-Cyclotron-Resonance (ToF-ICR) detection technique and the multiresonance phenomenon in 156Dy was discovered.

A novel Phase Imaging Ion-Cyclotron-Resonance detection technique was developed being substantially faster and providing ca. 40-fold gain in resolving power in comparison with the presently used ToF-ICR technique.

The novel Penning-trap mass spectrometer PENTATRAP aims for direct mass-ratio measurements with a relative precision better than 10E−11, which is required for the beta-decay and electron-capture experiments. In this context, the PENTATRAP Control System was developed in order to maximize the efficiency of the measurement process.
date: 2014
id_scheme: DOI
id_number: 10.11588/heidok.00016939
ppn_swb: 1658698886
own_urn: urn:nbn:de:bsz:16-heidok-169394
date_accepted: 2014-05-14
advisor: HASH(0x55de5798abc0)
language: eng
bibsort: GONCHAROVMHIGHPRECIS2014
full_text_status: public
citation:   Goncharov, Mikhail Leonidovich  (2014) High-precision Penning-trap mass spectrometry at SHIPTRAP and PENTATRAP for neutrino physics research.  [Dissertation]     
document_url: https://archiv.ub.uni-heidelberg.de/volltextserver/16939/1/2014_PhD_thesis_M_L_Goncharov.pdf