Laser Assisted Nuclear Decay Spectroscopy
A New Method for Studying Neutron-Deficient Francium Isotopes
Seiten
2014
|
2015
Springer International Publishing (Verlag)
978-3-319-07111-4 (ISBN)
Springer International Publishing (Verlag)
978-3-319-07111-4 (ISBN)
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.
Theoretical Considerations for Laser Spectroscopy.- Theoretical Considerations for Nuclear Decay Spectroscopy.- Experimental Setup at ISOLDE.- Collinear Resonance Ionization Spectroscopy.- Laser Assisted Nuclear Decay Spectroscopy.- Spectroscopic Studies of neutron-Deficient Francium.- Interpretation of Results.
| Erscheint lt. Verlag | 31.7.2014 |
|---|---|
| Reihe/Serie | Springer Theses |
| Zusatzinfo | XIII, 131 p. 95 illus., 46 illus. in color. |
| Verlagsort | Cham |
| Sprache | englisch |
| Maße | 155 x 235 mm |
| Gewicht | 391 g |
| Themenwelt | Naturwissenschaften ► Chemie ► Analytische Chemie |
| Naturwissenschaften ► Physik / Astronomie ► Atom- / Kern- / Molekularphysik | |
| Schlagworte | Alpha Decay Spectroscopy • Collinear Resonance Ionization Spectroscopy • Cris • Francium Isotopes • ISOLDE at CERN • Laser Spectroscopy in Nuclear Physics • Nuclear State Spectroscopy |
| ISBN-10 | 3-319-07111-4 / 3319071114 |
| ISBN-13 | 978-3-319-07111-4 / 9783319071114 |
| Zustand | Neuware |
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