rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Velocity Augmentation of a Supersonic Source and The Production of Slow, Cold, Molecular Beams
  name:
    name part: Sheffield, Les
    role:
      role term: creator
    role:
      role term: author.
  name:
    name part: Lyuksyutov, Igor
    role:
      role term: thesis advisor.
  name:
    name part: Texas A & M University
    role:
      role term: degree granting institution.
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: txu
    date issued: 2015
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: remote
    extent: 1 online resource.
  abstract: In this thesis I describe the second generation of a rotating supersonic beam source. The purpose of this device is to produce velocity augmented molecular beams for use with scattering experiments or subsequent slowing methods. The beam emerges from a nozzle inserted at the tip of a hollow aluminum rotor which can be spun at high speeds in either the forward or backwards direction. The forward direction mode increases the laboratory frame velocity distribution of the emitted beam and the backward direction mode decreases this velocity distribution. Both rotor modes are analyzed theoretically and experimentally within the text. I introduce a pulsed gas inlet system for the rotating source as well as cryocooling of the vacuum chamber. This new version provides moderately intense beams of slow molecules, containing ~10¹² molecules at lab speeds as low as 35 m/s, and very intense beams of fast molecules, containing ~10¹⁵ molecules at 400 m/s. Beams of any molecule available in gas phase can be produced utilizing this system. For collision experiments, the ability to scan the velocity utilizing the rotating source is very advantageous when using two merged beams. If the two velocities can be closely matched, very low relative collision energies can be produced without making either beam slow. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/154986
  note: by Les Sheffield.
  note: "Major Subject: Physics"
  note: Includes vita.
  note: Doctor of Philosophy Texas A & M University 2015 http://hdl.handle.net/1969.1/154986
  note: Includes bibliographical references.
  note: Text (Dissertation)
  subject:
    topic: Major physics
  subject:
    topic: Supersonic Velocity
  identifier: http://hdl.handle.net/1969.1/154986
  record info:
    record content source: TXA
    record creation date: 160217
    record change date: 20170928111823.0
    record identifier: in00003605175
    language of cataloging:
      language term: eng