Optimizing UNU/ICTP PFF Plasma Focus for Neon Soft X-ray Operation
The United Nations University/International Centre for Theoretical Physics Plasma Focus Facility (UNU/ICTP PFF), a 3.3-kJ plasma focus, was designed for operation in deuterium with a speed factor S such that the axial run-down time matches the current rise time at an end axial speed of nearly 10...
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my-inti-eprints.2712016-05-12T08:48:44Z http://eprints.intimal.edu.my/271/ Optimizing UNU/ICTP PFF Plasma Focus for Neon Soft X-ray Operation Saw, S. H. Lee, P. C. K. Rawat, Rajdeep Singh Lee, Sing QC Physics The United Nations University/International Centre for Theoretical Physics Plasma Focus Facility (UNU/ICTP PFF), a 3.3-kJ plasma focus, was designed for operation in deuterium with a speed factor S such that the axial run-down time matches the current rise time at an end axial speed of nearly 10 cm/μs. For operation in neon, we first consider that a focus pinch temperature between 200 and 500 eV may be suitable for a good yield of neon soft X-rays, which corresponds to an end axial speed of 6–7 cm/μs. On this basis, for operation in neon, the standard UNU/ICTP PFF needs to have its anode length z0 reduced by some 30%–40% to maintain the time matching. Numerical experiments using the Lee model code are carried out to determine the optimum configuration of the electrodes for the UNU/ICTP PFF capacitor system. The results show that an even more drastic shortening of anode length z0 is required, from the original 16 to 7 cm, at the same time, increasing the anode radius “a” from 0.95 to 1.2 cm, to obtain an optimum yield of Ysxr = 9.5 J. This represents a two- to threefold increase in the Ysxr from that computed for the standard UNU/ICTP PFF. IEEE 2009 Article PeerReviewed text en http://eprints.intimal.edu.my/271/1/1.pdf Saw, S. H. and Lee, P. C. K. and Rawat, Rajdeep Singh and Lee, Sing (2009) Optimizing UNU/ICTP PFF Plasma Focus for Neon Soft X-ray Operation. IEEE Transactions on Plasma Science, 37 (7). pp. 1276-1282. ISSN 0093-3813 10.1109/TPS.2009.2022167 |
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QC Physics Saw, S. H. Lee, P. C. K. Rawat, Rajdeep Singh Lee, Sing Optimizing UNU/ICTP PFF Plasma Focus for Neon Soft X-ray Operation |
description |
The United Nations University/International Centre
for Theoretical Physics Plasma Focus Facility (UNU/ICTP PFF),
a 3.3-kJ plasma focus, was designed for operation in deuterium
with a speed factor S such that the axial run-down time matches
the current rise time at an end axial speed of nearly 10 cm/μs. For
operation in neon, we first consider that a focus pinch temperature
between 200 and 500 eV may be suitable for a good yield of
neon soft X-rays, which corresponds to an end axial speed of
6–7 cm/μs. On this basis, for operation in neon, the standard
UNU/ICTP PFF needs to have its anode length z0 reduced by
some 30%–40% to maintain the time matching. Numerical experiments
using the Lee model code are carried out to determine
the optimum configuration of the electrodes for the UNU/ICTP
PFF capacitor system. The results show that an even more drastic
shortening of anode length z0 is required, from the original 16
to 7 cm, at the same time, increasing the anode radius “a” from
0.95 to 1.2 cm, to obtain an optimum yield of Ysxr = 9.5 J.
This represents a two- to threefold increase in the Ysxr from that
computed for the standard UNU/ICTP PFF. |
format |
Article |
author |
Saw, S. H. Lee, P. C. K. Rawat, Rajdeep Singh Lee, Sing |
author_facet |
Saw, S. H. Lee, P. C. K. Rawat, Rajdeep Singh Lee, Sing |
author_sort |
Saw, S. H. |
title |
Optimizing UNU/ICTP PFF Plasma Focus
for Neon Soft X-ray Operation |
title_short |
Optimizing UNU/ICTP PFF Plasma Focus
for Neon Soft X-ray Operation |
title_full |
Optimizing UNU/ICTP PFF Plasma Focus
for Neon Soft X-ray Operation |
title_fullStr |
Optimizing UNU/ICTP PFF Plasma Focus
for Neon Soft X-ray Operation |
title_full_unstemmed |
Optimizing UNU/ICTP PFF Plasma Focus
for Neon Soft X-ray Operation |
title_sort |
optimizing unu/ictp pff plasma focus
for neon soft x-ray operation |
publisher |
IEEE |
publishDate |
2009 |
url |
http://eprints.intimal.edu.my/271/1/1.pdf http://eprints.intimal.edu.my/271/ |
_version_ |
1644541163545296896 |