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Authors: Brewer, Samuel
Advisors: Tan, Joseph N
Rolston, Steven L
Department/Program: Chemical Physics
Type: Dissertation
Sponsors: Digital Repository at the University of Maryland
University of Maryland (College Park, Md.)
Subjects: Physics
Issue Date: 2012
Abstract: Recently, highly--charged ions have been isolated in a novel compact Penning trap designed to capture ions extracted from the NIST electron beam ion trap (EBIT), opening a new avenue of manipulating ions isolated in a controlled environment for a variety of studies. The unique architecture of this extremely compact Penning trap facilitates optical experiments with stored ions, as well as ion counting via position-sensitive or time-of-flight micro-channel plate (MCP) detectors. As a first demonstration, Ar<super>13+</super> ions are captured in one of the two fine structure levels forming the lowest lying states. The lifetime of the metastable 1s<super>2</super>2s<super>2</super>2p <super>2</super>P<sub>3/2</sub> state is measured by counting the 441 nm photons emitted in the spin-flipping (M1) decay to the ground state. This work presents the novel Penning trap, the apparatus deployed at the NIST EBIT, techniques employed for ion capture and storage, and a new measurement of the lifetime of the metastable <super>2</super>P<sub>3/2</sub> state.
Appears in Collections:Physics Theses and Dissertations
Chemistry & Biochemistry Theses and Dissertations
UMD Theses and Dissertations

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