L X-ray emission induced by heavy ions

Pajek, M.; Banaś, D.; Braziewicz, J.; Majewska, U.; Semaniak, J.; Fijał-Kirejczyk, I.; Jaskóła, M.; Czarnacki, W.; Korman, A.; Kretschmer, W.; Mukoyama, Takeshi; Trautmann, D.

doi:10.1016/j.nimb.2015.08.058

Cited by 7 publications

(9 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In a recent article [54], we analyzed the major sources of errors in the measurements of L-subshell cross sections. We concluded that these uncertainties come from four main sources: (i) determination of target 19 F ion inside the Os target as predicted by the Fermi Gas Model (FGM) [49] and the same outside the target as predicted by the Schiwietz model (Sch) [50] versus the incident energies. B.…”

Section: Resultsmentioning

confidence: 99%

“…Table 2. The L 1 , L 2 , L 3 , and L Tot ionization cross sections (kb) for 19 F on Os as a function of energy (MeV). TH1, TH2, and TH3 denote the ECUSAR-CSM, the RSCA-CSM, and the SLPA model, respectively, while EC denotes the electron capture.…”

Section: Resultsmentioning

confidence: 99%

“…The L-shell x-ray production cross sections in the Os elements using the 19 F ions (charge states q = 6+, 7+, 8+) in the 76-114 MeV energy range have been measured in the atomic physics beamline at the Inter-University Accelerator Centre, New Delhi. The heavy ions of fluorine -F 6+ (76 and 84 MeV), F 7+ (90 MeV) and F 8+ (98 and 114 MeV)-were obtained from the 15 UD Pelletron accelerator.…”

Section: Experimental Details and Data Analysismentioning

confidence: 99%

“…Although these inconsistencies are often attributed to multiple ionization phenomena [15][16][17], they do not account for all the discrepancies observed, for example, in experiments with an 8-36 MeV Si-ion beam on targets of Au, Bi, Th, and U with thicknesses between 12 and 40 μ g/cm 2 [18]. On such occasions, theoretical approaches have been modified to include the L-subshell coupling effect as well as the saturation of the binding effect at the united atom limit in addition to the multiple ionization [18,19]. Even though closeness between the experiments and theory is achieved, differences remain, suggesting that other physical processes are involved.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Understanding the mechanisms of L-shell x-ray emission from Os atoms bombarded by 4–6 MeV/u fluorine ion

Chatterjee¹,

Kumar²,

Kumar³

et al. 2022

Phys. Scr.

View full text Add to dashboard Cite

The L-subshell ionization mechanism is studied in an ultra-thin Os target bombarded by 4-6 MeV/u fluorine ions. Multiple ionization effects are considered through the change of fluorescence and Coster-Kronig yields while determining L-subshell ionization cross sections from L X-ray production cross sections. The present experimental values are compared with various theoretical approximations: (i) the relativistic semi-classical approximation (RSCA), (ii) the shellwise local plasma approximation (SLPA), and (iii) the ECUSAR theory. We also take into account the vacancy sharing among the subshells by the coupled-states model (CSM) and the electron capture (EC) by a standard formalism. We find that the ECUSAR-CSM-EC describes the measured excitation function curves the best. However, the theoretical calculations are still about a factor of two smaller than the measured values even though the recent fluorescence and Coster-Kronig yields are considered. Hence, a re-evaluation of these parameters is a challenge for the theoretical works. Whatsoever, this work leads to demonstrate that in the present energy range the heavy-ion induced inner-shell ionization of the heavy atoms can be understood by combining the direct Coulomb ionization, the electron capture, and the vacancy sharing among subshells, together with optimizing the atomic parameters. Optimization of the atomic parameters shows that our experimental results agree with theoretical vacancy production theories if the L1 fluorescence yield is nearly doubled. Such a optimization is validated by the proton induced L-shell ionization data of uranium atoms.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Experimental Details and Data Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Understanding the mechanisms of L-shell x-ray emission from Os atoms bombarded by 4–6 MeV/u fluorine ion

Chatterjee¹,

Kumar²,

Kumar³

et al. 2022

Phys. Scr.

View full text Add to dashboard Cite

show abstract

“…Moreover, the ionization cross sections are also higher than those induced by protons. Because of this, there is interest in using x-ray production by heavy ion impact for analytical applications [6,12].…”

mentioning

confidence: 99%

Clustering aspects in 20Ne Alpha-conjugate Nuclear System

Kaur

Singh

Patra

et al. 2018

JNP

View full text Add to dashboard Cite

Experimental results of L-subshell X-ray production cross sections induced by the impact of several ions heavier than protons were compiled in order to propose possible scaling laws. The ions of interest in this work are 4 He + , 9 Be 2+ , and 14 N 2+. A feasible universal scaling for the x-ray production cross sections of the L α (L 3 M 4 + L 3 M 5) line is based on a reduced velocity parameter ξ R L. In this scheme, the experimental data follow well resolved curves for each ion. A similar scaling for the L γ line (

show abstract