Impact of x-ray dose on the response of CR-39 to 1–5.5 MeV alphas
The CR-39 nuclear track detector is used in many nuclear diagnostics fielded at inertial confinement fusion (ICF) facilities. Large x-ray fluences generated by ICF experiments may impact the CR-39 response to incident charged particles. To determine the impact of x-ray exposure on the CR-39 response...
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| Format: | Article |
| Language: | en_US |
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American Institute of Physics (AIP)
2017
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| Online Access: | http://hdl.handle.net/1721.1/111189 https://orcid.org/0000-0003-4969-5571 https://orcid.org/0000-0003-0489-7479 https://orcid.org/0000-0001-7274-236X https://orcid.org/0000-0002-1020-3501 |
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| author | Rojas Herrera, Jimmy A. Rinderknecht, Hans George Zylstra, Alex Bennett Gatu Johnson, Maria Orozco, David Rosenberg, Michael Jonathan Sio, Hong Weng Seguin, Fredrick Hampton Frenje, Johan A Li, C. K. Petrasso, Richard D |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Rojas Herrera, Jimmy A. Rinderknecht, Hans George Zylstra, Alex Bennett Gatu Johnson, Maria Orozco, David Rosenberg, Michael Jonathan Sio, Hong Weng Seguin, Fredrick Hampton Frenje, Johan A Li, C. K. Petrasso, Richard D |
| author_sort | Rojas Herrera, Jimmy A. |
| collection | MIT |
| description | The CR-39 nuclear track detector is used in many nuclear diagnostics fielded at inertial confinement fusion (ICF) facilities. Large x-ray fluences generated by ICF experiments may impact the CR-39 response to incident charged particles. To determine the impact of x-ray exposure on the CR-39 response to alpha particles, a thick-target bremsstrahlung x-ray generator was used to expose CR-39 to various doses of 8 keV Cu-K[subscript α] and K[subscript β] x-rays. The CR-39 detectors were then exposed to 1–5.5 MeV alphas from an Am-241 source. The regions of the CR-39 exposed to x-rays showed a smaller track diameter than those not exposed to x-rays: for example, a dose of 3.0 ± 0.1 Gy causes a decrease of (19 ± 2)% in the track diameter of a 5.5 MeV alpha particle, while a dose of 60.0 ± 1.3 Gy results in a decrease of (45 ± 5)% in the track diameter. The reduced track diameters were found to be predominantly caused by a comparable reduction in the bulk etch rate of the CR-39 with x-ray dose. A residual effect depending on alpha particle energy is characterized using an empirical formula. |
| first_indexed | 2024-09-23T13:43:41Z |
| format | Article |
| id | mit-1721.1/111189 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:43:41Z |
| publishDate | 2017 |
| publisher | American Institute of Physics (AIP) |
| record_format | dspace |
| spelling | mit-1721.1/1111892022-10-01T16:46:27Z Impact of x-ray dose on the response of CR-39 to 1–5.5 MeV alphas Rojas Herrera, Jimmy A. Rinderknecht, Hans George Zylstra, Alex Bennett Gatu Johnson, Maria Orozco, David Rosenberg, Michael Jonathan Sio, Hong Weng Seguin, Fredrick Hampton Frenje, Johan A Li, C. K. Petrasso, Richard D Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Plasma Science and Fusion Center Rojas Herrera, Jimmy A. Rinderknecht, Hans George Zylstra, Alex Bennett Gatu Johnson, Maria Orozco, David Rosenberg, Michael Jonathan Sio, Hong Weng Seguin, Fredrick Hampton Frenje, Johan A Li, C. K. Petrasso, Richard D The CR-39 nuclear track detector is used in many nuclear diagnostics fielded at inertial confinement fusion (ICF) facilities. Large x-ray fluences generated by ICF experiments may impact the CR-39 response to incident charged particles. To determine the impact of x-ray exposure on the CR-39 response to alpha particles, a thick-target bremsstrahlung x-ray generator was used to expose CR-39 to various doses of 8 keV Cu-K[subscript α] and K[subscript β] x-rays. The CR-39 detectors were then exposed to 1–5.5 MeV alphas from an Am-241 source. The regions of the CR-39 exposed to x-rays showed a smaller track diameter than those not exposed to x-rays: for example, a dose of 3.0 ± 0.1 Gy causes a decrease of (19 ± 2)% in the track diameter of a 5.5 MeV alpha particle, while a dose of 60.0 ± 1.3 Gy results in a decrease of (45 ± 5)% in the track diameter. The reduced track diameters were found to be predominantly caused by a comparable reduction in the bulk etch rate of the CR-39 with x-ray dose. A residual effect depending on alpha particle energy is characterized using an empirical formula. United States. Department of Energy (Grant DE-NA0001857) 2017-09-13T15:42:47Z 2017-09-13T15:42:47Z 2015-03 2014-12 Article http://purl.org/eprint/type/JournalArticle 0034-6748 1089-7623 http://hdl.handle.net/1721.1/111189 Rojas-Herrera, J. et al. “Impact of x-Ray Dose on the Response of CR-39 to 1–5.5 MeV Alphas.” Review of Scientific Instruments 86, 3 (March 2015): 033501 © 2015 AIP Publishing https://orcid.org/0000-0003-4969-5571 https://orcid.org/0000-0003-0489-7479 https://orcid.org/0000-0001-7274-236X https://orcid.org/0000-0002-1020-3501 en_US http://dx.doi.org/10.1063/1.4913906 Review of Scientific Instruments Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Institute of Physics (AIP) MIT Plasma Science & Fusion Center |
| spellingShingle | Rojas Herrera, Jimmy A. Rinderknecht, Hans George Zylstra, Alex Bennett Gatu Johnson, Maria Orozco, David Rosenberg, Michael Jonathan Sio, Hong Weng Seguin, Fredrick Hampton Frenje, Johan A Li, C. K. Petrasso, Richard D Impact of x-ray dose on the response of CR-39 to 1–5.5 MeV alphas |
| title | Impact of x-ray dose on the response of CR-39 to 1–5.5 MeV alphas |
| title_full | Impact of x-ray dose on the response of CR-39 to 1–5.5 MeV alphas |
| title_fullStr | Impact of x-ray dose on the response of CR-39 to 1–5.5 MeV alphas |
| title_full_unstemmed | Impact of x-ray dose on the response of CR-39 to 1–5.5 MeV alphas |
| title_short | Impact of x-ray dose on the response of CR-39 to 1–5.5 MeV alphas |
| title_sort | impact of x ray dose on the response of cr 39 to 1 5 5 mev alphas |
| url | http://hdl.handle.net/1721.1/111189 https://orcid.org/0000-0003-4969-5571 https://orcid.org/0000-0003-0489-7479 https://orcid.org/0000-0001-7274-236X https://orcid.org/0000-0002-1020-3501 |
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