Erschienen: 31.07.2014 Abbildung von Lynch | Laser Assisted Nuclear Decay Spectroscopy | 1. Auflage | 2014 |


Laser Assisted Nuclear Decay Spectroscopy

A New Method for Studying Neutron-Deficient Francium Isotopes

Buch. Hardcover


xiii, 131 S. 49 s/w-Abbildungen, 46 Farbabbildungen, Bibliographien.

In englischer Sprache

Springer. ISBN 978-3-319-07111-4

Format (B x L): 15,5 x 23,5 cm

Gewicht: 391 g

Das Werk ist Teil der Reihe: Springer Theses


This work details an application of collinear resonance ionization spectroscopy for the separation of short-lived isomeric states and their subsequent study with decay spectroscopy. It reports the successful construction of a novel decay spectroscopy apparatus that can operate at pressures below 1 x 10^-9 mbar. The method is demonstrated by separating the nuclear ground and isomeric states of 204Fr and performing alpha-decay spectroscopy. An equivalent mass spectrometer would require 4.6 million times as much resolution to achieve the same result. This work unambiguously confirms the existence of a second isomeric state in 204Fr. The author also demonstrates the effectiveness of this method for laser spectroscopy and identification of hyperfine-structure components with energy tagging. This method was successfully used in 202Fr to identify ground and isomeric states. The measurement of 202Fr reported in this thesis demonstrates a factor of 100 improvement in sensitivity compared to state-of-the-art fluorescence techniques. The work reported in this thesis won the author the IOP Nuclear Physics Group Early Career Prize

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