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Effect of atomic number and pressure on plasma pinch properties and characteristic soft x-ray emission in PF1000

In this study, the Lee code is used to compute the characteristics soft x-ray yield (Ysxr) production for nitrogen (N2), oxygen (O2), neon (Ne), and argon (Ar) and bremsstrahlung radiation for hydrogen (H2), deuterium (D2), and helium (He) with pressure variation in PF1000 of 2.5-2.6 MA for D2. In t...

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Main Authors: Malek, M.A., Huda, M.N., Islam, M.K., Lee, S.
Format: Article
Published: Institute of Physics 2022
Subjects:
Q Science (General)
QC Physics
Online Access:http://eprints.um.edu.my/44071/
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spelling my.um.eprints.440712023-12-01T06:30:14Z http://eprints.um.edu.my/44071/ Effect of atomic number and pressure on plasma pinch properties and characteristic soft x-ray emission in PF1000 Malek, M.A. Huda, M.N. Islam, M.K. Lee, S. Q Science (General) QC Physics In this study, the Lee code is used to compute the characteristics soft x-ray yield (Ysxr) production for nitrogen (N2), oxygen (O2), neon (Ne), and argon (Ar) and bremsstrahlung radiation for hydrogen (H2), deuterium (D2), and helium (He) with pressure variation in PF1000 of 2.5-2.6 MA for D2. In the calculation of characteristic soft x-ray, the corresponding temperature windows of the said gases are set into the code at which they are ionized to their H-like and He-like levels. The focus pinch parameters such as radius ratio (minimum radius of plasma pinch column/anode radius), ion density, specific heat ratio, pinch energy density, self-absorption correction factor, and maximum induced voltage are computed at the optimum pressure of each gas. The obtained pinch plasma temperature range (1.2-2.2) × 106 K of H2, D2, and He is sufficiently high for fully ionized plasmas and the resulting bremsstrahlung radiation (14 J) for He is significantly larger than for H2 (0.26 J) and D2 (0.62 J). The optimum Ysxr of Ne(∼9314 J) at 0.51 Torr with pinch energy density (PED) (∼26 × 108 Jm−3) is found to be the highest whilst for Ar(∼7 J) at 0.019 Torr with (∼1.2 × 108 Jm−3) is the lowest. It is found that the radius ratio (∼0.05) of Ne is 3-fold smaller than that (∼0.16) in Ar. This enhancement of compression in pinch of Ne increases the ion density significantly by a factor of 253 than in Ar gas. Thus, the results show a strong correlation of plasma pinch properties with Ysxr for various gases. © 2022 The Author(s). Published by IOP Publishing Ltd. Institute of Physics 2022 Article PeerReviewed Malek, M.A. and Huda, M.N. and Islam, M.K. and Lee, S. (2022) Effect of atomic number and pressure on plasma pinch properties and characteristic soft x-ray emission in PF1000. Journal of Physics Communications, 6 (12). ISSN 23996528, DOI https://doi.org/10.1088/2399-6528/aca3fb <https://doi.org/10.1088/2399-6528/aca3fb>. 10.1088/2399-6528/aca3fb
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic Q Science (General)
QC Physics
spellingShingle Q Science (General)
QC Physics
Malek, M.A.
Huda, M.N.
Islam, M.K.
Lee, S.
Effect of atomic number and pressure on plasma pinch properties and characteristic soft x-ray emission in PF1000
description In this study, the Lee code is used to compute the characteristics soft x-ray yield (Ysxr) production for nitrogen (N2), oxygen (O2), neon (Ne), and argon (Ar) and bremsstrahlung radiation for hydrogen (H2), deuterium (D2), and helium (He) with pressure variation in PF1000 of 2.5-2.6 MA for D2. In the calculation of characteristic soft x-ray, the corresponding temperature windows of the said gases are set into the code at which they are ionized to their H-like and He-like levels. The focus pinch parameters such as radius ratio (minimum radius of plasma pinch column/anode radius), ion density, specific heat ratio, pinch energy density, self-absorption correction factor, and maximum induced voltage are computed at the optimum pressure of each gas. The obtained pinch plasma temperature range (1.2-2.2) × 106 K of H2, D2, and He is sufficiently high for fully ionized plasmas and the resulting bremsstrahlung radiation (14 J) for He is significantly larger than for H2 (0.26 J) and D2 (0.62 J). The optimum Ysxr of Ne(∼9314 J) at 0.51 Torr with pinch energy density (PED) (∼26 × 108 Jm−3) is found to be the highest whilst for Ar(∼7 J) at 0.019 Torr with (∼1.2 × 108 Jm−3) is the lowest. It is found that the radius ratio (∼0.05) of Ne is 3-fold smaller than that (∼0.16) in Ar. This enhancement of compression in pinch of Ne increases the ion density significantly by a factor of 253 than in Ar gas. Thus, the results show a strong correlation of plasma pinch properties with Ysxr for various gases. © 2022 The Author(s). Published by IOP Publishing Ltd.
format Article
author Malek, M.A.
Huda, M.N.
Islam, M.K.
Lee, S.
author_facet Malek, M.A.
Huda, M.N.
Islam, M.K.
Lee, S.
author_sort Malek, M.A.
title Effect of atomic number and pressure on plasma pinch properties and characteristic soft x-ray emission in PF1000
title_short Effect of atomic number and pressure on plasma pinch properties and characteristic soft x-ray emission in PF1000
title_full Effect of atomic number and pressure on plasma pinch properties and characteristic soft x-ray emission in PF1000
title_fullStr Effect of atomic number and pressure on plasma pinch properties and characteristic soft x-ray emission in PF1000
title_full_unstemmed Effect of atomic number and pressure on plasma pinch properties and characteristic soft x-ray emission in PF1000
title_sort effect of atomic number and pressure on plasma pinch properties and characteristic soft x-ray emission in pf1000
publisher Institute of Physics
publishDate 2022
url http://eprints.um.edu.my/44071/
_version_ 1784511899388346368
score 13.211869

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