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Range and straggling effects on CR-39/range-filter ion energy measurements

Journal Article · · Review of Scientific Instruments; (United States)
DOI:https://doi.org/10.1063/1.1143543· OSTI ID:7161768
 [1]; ;  [2]; ; ; ;  [3]
  1. POD Associates, Inc., Albuquerque, New Mexico 87106 (United States)
  2. University of New Mexico, Albuquerque, New Mexico 87131 (United States)
  3. Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States)
+ Show Author Affiliations

The CR-39/range-filter technique measures ion energy by determining the maximum filter thickness which ions can penetrate. CR-39 located behind the filter records the ions. This method is used to measure peak voltage in pulsed power accelerators. We investigated range and straggling effects in this diagnostic by exposing it to 8- and 15-MeV protons for both Al and Ta filters. The range agreed with published values to better than {plus minus}6%. The range straggling decreased for higher incident ion energy and lower atomic number, as expected, although there were differences up to a factor of 1.7 between the experimental values and predictions. The dependence of the track diameter distribution on ion energy enabled us to establish a signature which is characteristic of ions which penetrate a filter, via straggling. These results can be used to evaluate the errors present when this diagnostic is used to measure accelerator voltage.

DOE Contract Number:
AC04-76DP00789
OSTI ID:
7161768
Journal Information:
Review of Scientific Instruments; (United States), Journal Name: Review of Scientific Instruments; (United States) Vol. 63:10; ISSN RSINA; ISSN 0034-6748
Country of Publication:
United States
Language:
English

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Related Subjects

440103* -- Radiation Instrumentation-- Nuclear Spectroscopic Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ACCELERATORS
ACCURACY
ALUMINIUM
BARYONS
CHARGED-PARTICLE TRANSPORT
DIELECTRIC TRACK DETECTORS
ELECTRIC POTENTIAL
ELEMENTARY PARTICLES
ELEMENTS
ENERGY DEPENDENCE
ENERGY RANGE
FERMIONS
HADRONS
MEASURING INSTRUMENTS
METALS
MEV RANGE
MEV RANGE 01-10
MEV RANGE 10-100
NUCLEONS
PROTONS
RADIATION DETECTORS
RADIATION TRANSPORT
RANGE
TANTALUM
TRANSITION ELEMENTS