L-shell spectroscopy of neon and fluorine like copper ions from laser produced plasma

Channprit Kaur; S. Chaurasia; Narendra Singh; John Pasley; Sunny Aggarwal; Man Mohan

doi:10.1063/1.5051758

L-shell spectroscopy of neon and fluorine like copper ions from laser produced plasma

Channprit Kaur, S. Chaurasia^*, Narendra Singh, John Pasley, Sunny Aggarwal, Man Mohan

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

Ne, F, and O-like Rydberg resonance lines along with some of the inner shell satellite lines of Copper plasma, in the wavelength range of 7.9-9.5 Å, are experimentally observed using a thallium acid phthalate crystal spectrometer. The plasma is produced by the irradiation of a Cu target with a 15 J, 500 ps Nd: Glass laser with a focusable intensity up to 5 × 10 ¹⁴ W/cm ² . The observed lines result from the transitions among 2p-nd, 2p-ns, and 2s-nd (n = 4-6) levels. Transition wavelengths, transition probabilities, and oscillator strengths of these lines are calculated using the Multi-Configuration Dirac-Fock method. In this computation, the contribution of relativistic corrections such as two-body Breit corrections and QED corrections due to vacuum polarization and self-energy has also been considered. FLYCHK simulations are used to analyze the distribution of the various charge states of the Copper ions and to find the temperature and density of plasma. Moreover, the effect of self-absorption of the plasma (opacity), as well as of suprathermal electrons on charge state distribution of ions, is also studied. The synthetic spectrum provides a best-match with the experimental spectrum at a laser intensity of 1.3 × 10 ¹⁴ W/cm ² for T _c = 150 eV, T _h = 1000 eV, f = 0.008, and density 4.5 × 10 ²⁰ cm ⁻³ .The temperature and density ranges are also calculated using a radiative hydrodynamic code. The calculated temperature and density range are in agreement with the experimentally determined values. The effect of the change in laser intensity on the L-shell spectrum of Cu is studied which indicates the switching between lower (Cu XX) and higher charge states (Cu XXI and Cu XXII) at higher laser intensities.

Original language	English
Article number	023301
Number of pages	13
Journal	Physics of Plasmas
Volume	26
Issue number	2
Early online date	7 Feb 2019
DOIs	https://doi.org/10.1063/1.5051758
Publication status	E-pub ahead of print - 7 Feb 2019

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© 2019 Author(s). This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details.

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L-shell spectroscopy of neon and fluorine like copper ions from laser produced plasma
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@article{9ad0bb5a212543259741cfbab985784a,

title = "L-shell spectroscopy of neon and fluorine like copper ions from laser produced plasma",

abstract = " Ne, F, and O-like Rydberg resonance lines along with some of the inner shell satellite lines of Copper plasma, in the wavelength range of 7.9-9.5 {\AA}, are experimentally observed using a thallium acid phthalate crystal spectrometer. The plasma is produced by the irradiation of a Cu target with a 15 J, 500 ps Nd: Glass laser with a focusable intensity up to 5 × 10 14 W/cm 2 . The observed lines result from the transitions among 2p-nd, 2p-ns, and 2s-nd (n = 4-6) levels. Transition wavelengths, transition probabilities, and oscillator strengths of these lines are calculated using the Multi-Configuration Dirac-Fock method. In this computation, the contribution of relativistic corrections such as two-body Breit corrections and QED corrections due to vacuum polarization and self-energy has also been considered. FLYCHK simulations are used to analyze the distribution of the various charge states of the Copper ions and to find the temperature and density of plasma. Moreover, the effect of self-absorption of the plasma (opacity), as well as of suprathermal electrons on charge state distribution of ions, is also studied. The synthetic spectrum provides a best-match with the experimental spectrum at a laser intensity of 1.3 × 10 14 W/cm 2 for T c = 150 eV, T h = 1000 eV, f = 0.008, and density 4.5 × 10 20 cm −3 .The temperature and density ranges are also calculated using a radiative hydrodynamic code. The calculated temperature and density range are in agreement with the experimentally determined values. The effect of the change in laser intensity on the L-shell spectrum of Cu is studied which indicates the switching between lower (Cu XX) and higher charge states (Cu XXI and Cu XXII) at higher laser intensities. ",

author = "Channprit Kaur and S. Chaurasia and Narendra Singh and John Pasley and Sunny Aggarwal and Man Mohan",

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AU - Kaur, Channprit

AU - Chaurasia, S.

AU - Singh, Narendra

AU - Pasley, John

AU - Aggarwal, Sunny

AU - Mohan, Man

N1 - © 2019 Author(s). This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details.

PY - 2019/2/7

Y1 - 2019/2/7

N2 - Ne, F, and O-like Rydberg resonance lines along with some of the inner shell satellite lines of Copper plasma, in the wavelength range of 7.9-9.5 Å, are experimentally observed using a thallium acid phthalate crystal spectrometer. The plasma is produced by the irradiation of a Cu target with a 15 J, 500 ps Nd: Glass laser with a focusable intensity up to 5 × 10 14 W/cm 2 . The observed lines result from the transitions among 2p-nd, 2p-ns, and 2s-nd (n = 4-6) levels. Transition wavelengths, transition probabilities, and oscillator strengths of these lines are calculated using the Multi-Configuration Dirac-Fock method. In this computation, the contribution of relativistic corrections such as two-body Breit corrections and QED corrections due to vacuum polarization and self-energy has also been considered. FLYCHK simulations are used to analyze the distribution of the various charge states of the Copper ions and to find the temperature and density of plasma. Moreover, the effect of self-absorption of the plasma (opacity), as well as of suprathermal electrons on charge state distribution of ions, is also studied. The synthetic spectrum provides a best-match with the experimental spectrum at a laser intensity of 1.3 × 10 14 W/cm 2 for T c = 150 eV, T h = 1000 eV, f = 0.008, and density 4.5 × 10 20 cm −3 .The temperature and density ranges are also calculated using a radiative hydrodynamic code. The calculated temperature and density range are in agreement with the experimentally determined values. The effect of the change in laser intensity on the L-shell spectrum of Cu is studied which indicates the switching between lower (Cu XX) and higher charge states (Cu XXI and Cu XXII) at higher laser intensities.

AB - Ne, F, and O-like Rydberg resonance lines along with some of the inner shell satellite lines of Copper plasma, in the wavelength range of 7.9-9.5 Å, are experimentally observed using a thallium acid phthalate crystal spectrometer. The plasma is produced by the irradiation of a Cu target with a 15 J, 500 ps Nd: Glass laser with a focusable intensity up to 5 × 10 14 W/cm 2 . The observed lines result from the transitions among 2p-nd, 2p-ns, and 2s-nd (n = 4-6) levels. Transition wavelengths, transition probabilities, and oscillator strengths of these lines are calculated using the Multi-Configuration Dirac-Fock method. In this computation, the contribution of relativistic corrections such as two-body Breit corrections and QED corrections due to vacuum polarization and self-energy has also been considered. FLYCHK simulations are used to analyze the distribution of the various charge states of the Copper ions and to find the temperature and density of plasma. Moreover, the effect of self-absorption of the plasma (opacity), as well as of suprathermal electrons on charge state distribution of ions, is also studied. The synthetic spectrum provides a best-match with the experimental spectrum at a laser intensity of 1.3 × 10 14 W/cm 2 for T c = 150 eV, T h = 1000 eV, f = 0.008, and density 4.5 × 10 20 cm −3 .The temperature and density ranges are also calculated using a radiative hydrodynamic code. The calculated temperature and density range are in agreement with the experimentally determined values. The effect of the change in laser intensity on the L-shell spectrum of Cu is studied which indicates the switching between lower (Cu XX) and higher charge states (Cu XXI and Cu XXII) at higher laser intensities.

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DO - 10.1063/1.5051758

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AN - SCOPUS:85061366457

SN - 1070-664X

VL - 26

JO - Physics of Plasmas

JF - Physics of Plasmas

IS - 2

M1 - 023301

ER -

L-shell spectroscopy of neon and fluorine like copper ions from laser produced plasma

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