skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Impact of x-ray dose on track formation and data analysis for CR-39-based proton diagnostics

Journal Article · · Review of Scientific Instruments
DOI:https://doi.org/10.1063/1.4938161· OSTI ID:1261134
ORCiD logo [1];  [2]; ORCiD logo [3]; ORCiD logo [2];  [2]; ORCiD logo [2];  [2];  [4];  [2];  [2]; ORCiD logo [2];  [5];  [6];  [5];  [5];  [5]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  3. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  4. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Univ. of Rochester, Rochester, NY (United States)
  5. State Univ. of New York at Geneseo, Geneseo, NY (United States)
  6. Rochester Institute of Technology, Rochester, NY (United States)

The nuclear track detector CR-39 is used extensively for charged particle diagnosis, in particular proton spectroscopy, at inertial confinement fusion facilities. These detectors can absorb x-ray doses from the experiments in the order of 1–100 Gy, the effects of which are not accounted for in the previous detector calibrations. X-ray dose absorbed in the CR-39 has previously been shown to affect the track size of alpha particles in the detector, primarily due to a measured reduction in the material bulk etch rate [Rojas-Herrera et al., Rev. Sci. Instrum. 86, 033501 (2015)]. Similar to the previous findings for alpha particles, protons with energies in the range 0.5–9.1 MeV are shown to produce tracks that are systematically smaller as a function of the absorbed x-ray dose in the CR-39. The reduction of track size due to x-ray dose is found to diminish with time between exposure and etching if the CR-39 is stored at ambient temperature, and complete recovery is observed after two weeks. Furthermore, the impact of this effect on the analysis of data from existing CR-39-based proton diagnostics on OMEGA and the National Ignition Facility is evaluated and best practices are proposed for cases in which the effect of x rays is significant.

Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0002726; NA0001857; NA0002949
OSTI ID:
1261134
Alternate ID(s):
OSTI ID: 1261136; OSTI ID: 1261138
Journal Information:
Review of Scientific Instruments, Vol. 86, Issue 12; ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 5 works
Citation information provided by
Web of Science

References (37)

Fusion neutron energies and spectra journal July 1973
D–3He proton spectra for diagnosing shell ρR and fuel Ti of imploded capsules at OMEGA journal June 2000
First measurements of the absolute neutron spectrum using the magnetic recoil spectrometer at OMEGA (invited) journal October 2008
Thermonuclear ignition in inertial confinement fusion and comparison with magnetic confinement journal May 2010
Measuring E and B Fields in Laser-Produced Plasmas with Monoenergetic Proton Radiography journal September 2006
Proton Radiography of Inertial Fusion Implosions journal February 2008
Charged-Particle Probing of X-ray-Driven Inertial-Fusion Implosions journal January 2010
First Measurements of Rayleigh-Taylor-Induced Magnetic Fields in Laser-Produced Plasmas journal June 2012
Observation of magnetic field generation via the Weibel instability in interpenetrating plasma flows journal January 2015
A nuclear-track-recording polymer of unique sensitivity and resolution journal July 1978
Spectrometry of charged particles from inertial-confinement-fusion plasmas journal February 2003
Absolute measurements of neutron yields from DD and DT implosions at the OMEGA laser facility using CR-39 track detectors journal July 2002
Measured dependence of nuclear burn region size on implosion parameters in inertial confinement fusion experiments journal August 2006
High-resolution Thomson parabola for ion analysis journal November 2011
The magnetic recoil spectrometer for measurements of the absolute neutron spectrum at OMEGA and the NIF journal April 2013
Advances in compact proton spectrometers for inertial-confinement fusion and plasma nuclear science journal October 2012
Charged-particle spectroscopy for diagnosing shock ρR and strength in NIF implosions journal October 2012
A compact neutron spectrometer for characterizing inertial confinement fusion implosions at OMEGA and the NIF journal June 2014
A compact proton spectrometer for measurement of the absolute DD proton spectrum from which yield and ρR are determined in thin-shell inertial-confinement-fusion implosions journal October 2014
The physics basis for ignition using indirect-drive targets on the National Ignition Facility journal February 2004
Development of etched nuclear tracks journal June 1980
Track-registration-and-development characteristics of CR-39 plastic track detector journal January 1983
The response of CR-39 nuclear track detector to 1–9 MeV protons journal October 2011
Ageing effects in CR-39
  • Portwood, T.; Henshaw, Dl; Stejny, J.
  • International Journal of Radiation Applications and Instrumentation. Part D. Nuclear Tracks and Radiation Measurements, Vol. 12, Issue 1-6 https://doi.org/10.1016/1359-0189(86)90549-2
journal January 1986
Etching characteristics of cellulose nitrate and CR-39 after high dose electron irradiation
  • Charvát, Jiři; Spurný, František
  • International Journal of Radiation Applications and Instrumentation. Part D. Nuclear Tracks and Radiation Measurements, Vol. 14, Issue 4 https://doi.org/10.1016/1359-0189(88)90004-0
journal January 1988
Anomalous behaviour of environment affected CR-39 at elevated temperatures journal February 1990
Changes in CR-39 proton sensitivity due to prolonged exposure to high vacuums relevant to the National Ignition Facility and OMEGA journal September 2011
Impact of x-ray dose on the response of CR-39 to 1–5.5 MeV alphas journal March 2015
Hard x-ray detectors for OMEGA and NIF journal January 2001
Filter-fluorescer diagnostic system for the National Ignition Facility journal October 2004
A technique for extending by ∼10 3 the dynamic range of compact proton spectrometers for diagnosing ICF implosions on the National Ignition Facility and OMEGA journal November 2014
Increasing the energy dynamic range of solid-state nuclear track detectors using multiple surfaces journal August 2011
Empirical assessment of the detection efficiency of CR-39 at high proton fluence and a compact, proton detector for high-fluence applications journal April 2014
Upgrade of the MIT Linear Electrostatic Ion Accelerator (LEIA) for nuclear diagnostics development for Omega, Z and the NIF journal April 2012
The effect of shock dynamics on compressibility of ignition-scale National Ignition Facility implosions journal November 2014
Monoenergetic proton backlighter for measuring E and B fields and for radiographing implosions and high-energy density plasmas (invited) journal October 2006
D3He-proton emission imaging for inertial-confinement-fusion experiments (invited) journal October 2004

Cited By (1)

Spatial distribution of ion emission in gas-puff z-pinches and dense plasma foci journal January 2020

Similar Records

Impact of x-ray dose on track formation and data analysis for CR-39-based proton diagnostics
Journal Article · Tue Dec 15 00:00:00 EST 2015 · Review of Scientific Instruments · OSTI ID:1261134

Impact of x-ray dose on the response of CR-39 to 1–5.5 MeV alphas
Journal Article · Sun Mar 01 00:00:00 EST 2015 · Review of Scientific Instruments · OSTI ID:1261134

Impact of x-ray dose on the response of CR-39 to 1–5.5 MeV alphas
Journal Article · Sun Mar 15 00:00:00 EDT 2015 · Review of Scientific Instruments · OSTI ID:1261134