An electrostatic ion trap for laser and nuclear spectroscopy at the IGISOL

Abstract

This thesis presents the theoretical modelling and commissioning of the laser station at the newly constructed IGISOL 4 facility. The experimental techniques and apparatus of the facility, focusing on a line dedicated to laser spectroscopy, are described, followed by details on simulations of the beam-line.First spectroscopic data has been acquired at IGISOL 4. The isotope shifts and hyperfine structure of stable and radioactive molybdenum isotopes were acquired using collinear laser spectroscopy. The spectroscopy of this element was chosen in order to compare the results with those previously acquired at IGISOL 3. The isotope shifts and hyperfine dipole constants calculated were found to agree and the hyperfine structure of the 4d4(5D)5s 6D1/2 to 4d4(5D)5p 6F1/2 transition in 107Mo has been observed for the first time.A new electrostatic ion trap (ConeTrap) has been designed for trapping and optical pumping of ions in high vacuum using realistic ion optical simulations. The ConeTrap has been designed with an extended central section in order to facilitate the optical pumping of contained ions. The trap uses asymmetric voltages to achieve greater extraction efficiency and an acceptance time of ~10 us. Fast high-voltage switching circuitry has been created, with fall and rise times of

Date of Award	1 Aug 2014
Original language	English
Awarding Institution	The University of Manchester
Supervisor	Paul Campbell (Supervisor)