A low energy tunable pulsed X-ray source based on the pseudospark electron beam
A low energy pulsed X-ray source with 17 J electrical input energy has been constructed based on the vacuum spark configuration triggered by the pseudospark electron beam. With such a low input electrical energy, the frequently studied X-ray emitting vacuum spark plasma is not obtained. Instead, thi...
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| Format: | Article |
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Cambridge University Press
2007
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| author | Wong, C.S. Woo, H.J. Yap, S.L. |
| author_facet | Wong, C.S. Woo, H.J. Yap, S.L. |
| author_sort | Wong, C.S. |
| collection | UM |
| description | A low energy pulsed X-ray source with 17 J electrical input energy has been constructed based on the vacuum spark configuration triggered by the pseudospark electron beam. With such a low input electrical energy, the frequently studied X-ray emitting vacuum spark plasma is not obtained. Instead, this configuration gives rise to a point-like electron beam-target pulsed X-ray source at the tip of the anode. Emission of X-ray is observed during the pre-breakdown phase. The X-ray spectrum is dominated by the characteristic line emission of the anode material. The total X-ray energy emission from the source can be estimated by assuming it to be a monochromatic point source. It is found to have an X-ray production efficiency of 0.1%, giving an average X-ray dosage of 18 mGy per pulse. X-ray radiography of small biological sample is demonstrated to illustrate a potential application of the present X-ray source. |
| first_indexed | 2024-03-06T05:32:03Z |
| format | Article |
| id | um.eprints-12785 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T05:32:03Z |
| publishDate | 2007 |
| publisher | Cambridge University Press |
| record_format | dspace |
| spelling | um.eprints-127852015-02-17T03:36:12Z http://eprints.um.edu.my/12785/ A low energy tunable pulsed X-ray source based on the pseudospark electron beam Wong, C.S. Woo, H.J. Yap, S.L. Q Science (General) QC Physics A low energy pulsed X-ray source with 17 J electrical input energy has been constructed based on the vacuum spark configuration triggered by the pseudospark electron beam. With such a low input electrical energy, the frequently studied X-ray emitting vacuum spark plasma is not obtained. Instead, this configuration gives rise to a point-like electron beam-target pulsed X-ray source at the tip of the anode. Emission of X-ray is observed during the pre-breakdown phase. The X-ray spectrum is dominated by the characteristic line emission of the anode material. The total X-ray energy emission from the source can be estimated by assuming it to be a monochromatic point source. It is found to have an X-ray production efficiency of 0.1%, giving an average X-ray dosage of 18 mGy per pulse. X-ray radiography of small biological sample is demonstrated to illustrate a potential application of the present X-ray source. Cambridge University Press 2007 Article PeerReviewed Wong, C.S. and Woo, H.J. and Yap, S.L. (2007) A low energy tunable pulsed X-ray source based on the pseudospark electron beam. Laser and Particle Beams, 25 (3). pp. 497-502. ISSN 0263-0346, DOI https://doi.org/10.1017/S0263034607000614 <https://doi.org/10.1017/S0263034607000614>. http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=1316372&fulltextType=RA&fileId=S0263034607000614 http://dx.doi.org/10.1017/S0263034607000614 |
| spellingShingle | Q Science (General) QC Physics Wong, C.S. Woo, H.J. Yap, S.L. A low energy tunable pulsed X-ray source based on the pseudospark electron beam |
| title | A low energy tunable pulsed X-ray source based on the pseudospark electron beam |
| title_full | A low energy tunable pulsed X-ray source based on the pseudospark electron beam |
| title_fullStr | A low energy tunable pulsed X-ray source based on the pseudospark electron beam |
| title_full_unstemmed | A low energy tunable pulsed X-ray source based on the pseudospark electron beam |
| title_short | A low energy tunable pulsed X-ray source based on the pseudospark electron beam |
| title_sort | low energy tunable pulsed x ray source based on the pseudospark electron beam |
| topic | Q Science (General) QC Physics |
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