Applied Laser Spectroscopy for Nuclear Physics
Isotope Shifts in the Mercury Isotopic Chain and Laser Ion Source Development
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Beschreibung
This thesis explores two distinct applications of laser spectroscopy: the study of nuclear ground state properties, and element selective radioactive ion beam production. It also presents the methods and results of an investigation into isotope shifts in the mercury isotopic chain. These Resonance Ionization Laser Ion Source (RILIS) developments are detailed, together with an RILIS ionization scheme that allowed laser ionized ion beams of chromium, germanium, radium and tellurium to be generated at the Isotope Mass Separator On-Line (ISOLDE) facility.
A combination of laser spectroscopy with decay spectroscopy and mass spectrometry unambiguously demonstrated a cessation of the extreme shape staggering first observed in the 1970s and revealed the characteristic kink at the crossing of the N=126 shell closure. A series of RILIS developments were required to facilitate this experiment, including mercury “ionization scheme” development and the coupling of the RILIS with an arc discharge ion source.
Laser spectroscopy has since become a powerful tool for nuclear physics and the Resonance Ionization Laser Ion Source (RILIS), of the ISOLDE facility at CERN, is a prime example. Highlighting important advances in this field, the thesis offers a unique and revealing resource.
Nominated as an outstanding Ph.D. thesis by the University of Manchester, UK
Presents isotope shifts from 177 Hg to 208 Hg, a cessation of pronounced shape staggering in the mercury isotopic chain and crossing the N=126 shell closure
Includes the resonance ionization scheme development for chromium, germanium, mercury radium, and tellurium
Couples laser and arc discharge ion sources
Nominated as an outstanding Ph.D. thesis by the University of Manchester, UK Presents isotope shifts from 177 Hg to 208 Hg, a cessation of pronounced shape staggering in the mercury isotopic chain and crossing the N=126 shell closure Includes the resonance ionization scheme development for chromium, germanium, mercury radium, and tellurium Couples laser and arc discharge ion sources
Autor*in
Thomas Day Goodacre
Themen in »Applied Laser Spectroscopy for Nuclear Physics«
Mercury Isotope Shifts Mercury Mean Square Charge Radii Nuclear Shape Staggering Shell Closure Crossing ISOLDE RILIS Resonance Ionization Spectroscopy (RIS) Ion Source Development Radioactive Ion Beam Production