Energy shifts of Kα,β,γ X-ray satellites for atoms with 13⩽Z⩽90: A systematic calculation and a new analytical description

Wang, Xiang-Li; Dong, Chenzhong; Su, Maogen

doi:10.1016/j.nimb.2012.03.009

Cited by 10 publications

(5 citation statements)

References 39 publications

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“…Within the measurement uncertainty, peak positions do not change with different beam energies. The measured peak positions were compared with a empirical formula by Wang et al The agreement between our measurements and the used formula is not satisfactory in the case of Ti K α X‐ray satellites.…”

Section: Discussionmentioning

confidence: 80%

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Heavy ion induced Ti X‐ray satellite structure for Ti, TiN, and TiO₂ thin films

et al. 2018

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X‐ray emission spectra of three different titanium‐containing thin films, Ti, TiO2, and TiN, were measured using 5.1 MeV 7Li2+, 4.4–6.8 MeV 12C3+, 6.8 MeV 16O3+, and 11.9 MeV 63Cu6+ beams as excitation. The energy spectra were collected using a high energy resolution transition‐edge sensor array. In all measurements, the average L‐shell vacancy fraction was higher for the metallic Ti than for the other samples, whereas the difference between TiN and TiO2 was negligible. The universal variable Xn of the geometrical model was used to study the systematics of the average L‐shell vacancy fraction at the time of Kα emission. Our experiments expand previously studied Xn values, and a fairly good agreement with previous studies was found.

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Section: Discussionmentioning

confidence: 80%

“…The multiple ionization satellite peaks are measured relative to the single ionized peak of the same sample. The experimental values are compared with an empirical formula fitted by Wang et al …”

Section: Discussionmentioning

confidence: 99%

Heavy ion induced Ti X‐ray satellite structure for Ti, TiN, and TiO₂ thin films

et al. 2018

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“…The center energies of the KαL i peaks are higher by ∼ i × 20-30 eV than those of the Fe Kα1 and Kα2 lines. This is because the K-L1 (K-L2) transition lines shift upwards by ∼ 20-30 eV per L-shell electron ionization (= ∆EL) (e.g., Wang et al 2012). The outer shell (M, N, ...) ionization is mainly manifested in broadenings of the KαL i peaks because the energy shift ∆EM (and ∆EN, ...) of the transition lines due to additional M-shell and outer shell vacancies are sufficiently smaller than ∆EL, and is equal to or smaller than the natural widths of the transition lines.…”

Section: Kα Line Structures By Impacts Of Mono-energetic Ionsmentioning

confidence: 99%

Probing Cosmic Rays with Fe K$α$ Line Structures Generated by Multiple Ionization Process

Okon,

Imai,

Tanaka

et al. 2020

Preprint

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Supernova remnants (SNRs) have been regarded as major acceleration sites of Galactic cosmic rays. Recent X-ray studies revealed neutral Fe Kα line emission from dense gas in the vicinity of some SNRs, which can be best interpreted as K-shell ionization of Fe atoms in the gas by sub-relativistic particles accelerated in the SNRs. In this Letter, we propose a novel method of constraining the composition of particles accelerated in SNRs, which is currently unknown. When energetic heavy ions collide with target atoms, their strong Coulomb field can easily cause simultaneous ejection of multiple inner-shell electrons of the target. This results in shifts in characteristic X-ray line energies, forming distinctive spectral structures. Detection of such structures in the neutral Fe Kα line strongly supports the particle ionization scenario, and furthermore provides direct evidence of heavy ions in the accelerated particles. We construct a model for the Fe Kα line structures by various projectile ions utilizing atomic-collision data.

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“…Since then, the FAC has been extensively used for calculating the atomic data in several publications. [28][29][30][31][32][33][34]…”

Section: Computational Toolsmentioning

confidence: 99%

Table-top two-color soft X-ray laser by means of Ni-like plasmas

2016

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Laser-produced Ni-like plasmas are known as active media for extreme ultraviolet lasing, with the flexibility to two-color lasing. Two-color laser generation is very complex at accelerator facilities. In this work, plasma lasing at the 3d 9 4d 1 (J ¼ 0) ! 3d 9 4p 1 (J ¼ 1) (collisional-pumping process) and the 3d 9 4f 1 (J ¼ 1) ! 3d 9 4d 1 (J ¼ 1) (photo-pumping process) transitions is studied experimentally and computationally. Several key characteristics of collisional-and photo-pumping laser, such as divergence, pointing stability, and intensity have been investigated. The measurements showed different pulse characteristics for the two lasing processes affected by plasma inhomogeneity in temperature and density. Analytical expressions of these characteristics for both collisional-and photopumping are derived. It is found that the plasma that maximizes the photo-pumping lasing is 20% hotter and 70% denser than the plasma that optimizes the collisional-pumping lasing. The gain of collisional pumping is %4 times higher than the gain for the photo-pumping. The gain lifetime is a factor of %5.2 larger for the monopole-pumping. Similarly, the gain thickness is a factor of %1.8 larger. It is also found that the gain build-up time for collisional-and photo-pumping is 0.7 ps and 0.9 ps, respectively, whereas the build-up length-scale is 11.5 lm and 6.3 lm, respectively. Published by AIP Publishing. [http://dx.

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Energy shifts of Kα,β,γ X-ray satellites for atoms with 13⩽Z⩽90: A systematic calculation and a new analytical description

Cited by 10 publications

References 39 publications

Heavy ion induced Ti X‐ray satellite structure for Ti, TiN, and TiO₂ thin films

Heavy ion induced Ti X‐ray satellite structure for Ti, TiN, and TiO₂ thin films

Probing Cosmic Rays with Fe K$α$ Line Structures Generated by Multiple Ionization Process

Table-top two-color soft X-ray laser by means of Ni-like plasmas

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Energy shifts of Kα,β,γ X-ray satellites for atoms with 13⩽Z⩽90: A systematic calculation and a new analytical description

Cited by 10 publications

References 39 publications

Heavy ion induced Ti X‐ray satellite structure for Ti, TiN, and TiO2 thin films

Heavy ion induced Ti X‐ray satellite structure for Ti, TiN, and TiO2 thin films

Probing Cosmic Rays with Fe K$α$ Line Structures Generated by Multiple Ionization Process

Table-top two-color soft X-ray laser by means of Ni-like plasmas

Contact Info

Product

Resources

About

Heavy ion induced Ti X‐ray satellite structure for Ti, TiN, and TiO₂ thin films

Heavy ion induced Ti X‐ray satellite structure for Ti, TiN, and TiO₂ thin films