Evidence for population inversions in Al and Mg by laser irradiation at 20-ps pulse lengths

G. Charatis; N. D. Delamater; Gar E. Busch; R. A. Bosch; G. G. Ganger; J. L. Thornburg; J. R. Brundage; D. Sullivan; H. A. Neal; R. L. Shephard; C. J. Keane; A. L. Osterheld; D. C. Eder; Dennis L Matthews

doi:10.1364/JOSAB.9.001278

Evidence for population inversions in Al and Mg by laser irradiation at 20-ps pulse lengths

G. Charatis, N. D. Delamater, Gar E. Busch, R. A. Bosch, G. G. Ganger, J. L. Thornburg, J. R. Brundage, D. Sullivan, H. A. Neal, R. L. Shephard, C. J. Keane, A. L. Osterheld, D. C. Eder, Dennis L Matthews

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

5 Scopus citations

Abstract

In the course of conducting laser-target interaction experiments at 20-ps pulse length using Al and Mg targets, to determine the ionization balance of these elements, time-resolved K-shell spectral line strengths were obtained, suggesting population inversions between excited levels in both He-like and H-like ions. Effects of resonance-line opacities need to be analyzed in more detail, but opacity effects alone do not account for the anomalous line-intensity ratios that are observed to persist 200–300 ps after the laser pulse. Comparisons with 50-ps and 100-ps pulse shots do not show evidence of inversion, although nonequilibrium spectral lineintensity distributions are observed.

Original language	English (US)
Pages (from-to)	1278-1282
Number of pages	5
Journal	Journal of the Optical Society of America B: Optical Physics
Volume	9
Issue number	8
DOIs	https://doi.org/10.1364/JOSAB.9.001278
State	Published - 1992
Externally published	Yes

ASJC Scopus subject areas

Statistical and Nonlinear Physics
Atomic and Molecular Physics, and Optics

Access to Document

10.1364/JOSAB.9.001278

Cite this

Charatis, G., Delamater, N. D., Busch, G. E., Bosch, R. A., Ganger, G. G., Thornburg, J. L., Brundage, J. R., Sullivan, D., Neal, H. A., Shephard, R. L., Keane, C. J., Osterheld, A. L., Eder, D. C., & Matthews, D. L. (1992). Evidence for population inversions in Al and Mg by laser irradiation at 20-ps pulse lengths. Journal of the Optical Society of America B: Optical Physics, 9(8), 1278-1282. https://doi.org/10.1364/JOSAB.9.001278

Evidence for population inversions in Al and Mg by laser irradiation at 20-ps pulse lengths. / Charatis, G.; Delamater, N. D.; Busch, Gar E.; Bosch, R. A.; Ganger, G. G.; Thornburg, J. L.; Brundage, J. R.; Sullivan, D.; Neal, H. A.; Shephard, R. L.; Keane, C. J.; Osterheld, A. L.; Eder, D. C.; Matthews, Dennis L.

In: Journal of the Optical Society of America B: Optical Physics, Vol. 9, No. 8, 1992, p. 1278-1282.

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

Charatis, G, Delamater, ND, Busch, GE, Bosch, RA, Ganger, GG, Thornburg, JL, Brundage, JR, Sullivan, D, Neal, HA, Shephard, RL, Keane, CJ, Osterheld, AL, Eder, DC & Matthews, DL 1992, 'Evidence for population inversions in Al and Mg by laser irradiation at 20-ps pulse lengths', Journal of the Optical Society of America B: Optical Physics, vol. 9, no. 8, pp. 1278-1282. https://doi.org/10.1364/JOSAB.9.001278

Charatis, G. ; Delamater, N. D. ; Busch, Gar E. ; Bosch, R. A. ; Ganger, G. G. ; Thornburg, J. L. ; Brundage, J. R. ; Sullivan, D. ; Neal, H. A. ; Shephard, R. L. ; Keane, C. J. ; Osterheld, A. L. ; Eder, D. C. ; Matthews, Dennis L. / Evidence for population inversions in Al and Mg by laser irradiation at 20-ps pulse lengths. In: Journal of the Optical Society of America B: Optical Physics. 1992 ; Vol. 9, No. 8. pp. 1278-1282.

@article{c0a63bb6c52f4832aa7a713d5a906abf,

title = "Evidence for population inversions in Al and Mg by laser irradiation at 20-ps pulse lengths",

abstract = "In the course of conducting laser-target interaction experiments at 20-ps pulse length using Al and Mg targets, to determine the ionization balance of these elements, time-resolved K-shell spectral line strengths were obtained, suggesting population inversions between excited levels in both He-like and H-like ions. Effects of resonance-line opacities need to be analyzed in more detail, but opacity effects alone do not account for the anomalous line-intensity ratios that are observed to persist 200–300 ps after the laser pulse. Comparisons with 50-ps and 100-ps pulse shots do not show evidence of inversion, although nonequilibrium spectral lineintensity distributions are observed.",

author = "G. Charatis and Delamater, {N. D.} and Busch, {Gar E.} and Bosch, {R. A.} and Ganger, {G. G.} and Thornburg, {J. L.} and Brundage, {J. R.} and D. Sullivan and Neal, {H. A.} and Shephard, {R. L.} and Keane, {C. J.} and Osterheld, {A. L.} and Eder, {D. C.} and Matthews, {Dennis L}",

year = "1992",

doi = "10.1364/JOSAB.9.001278",

language = "English (US)",

volume = "9",

pages = "1278--1282",

journal = "Journal of the Optical Society of America B: Optical Physics",

issn = "0740-3224",

publisher = "The Optical Society",

number = "8",

}

TY - JOUR

T1 - Evidence for population inversions in Al and Mg by laser irradiation at 20-ps pulse lengths

AU - Charatis, G.

AU - Delamater, N. D.

AU - Busch, Gar E.

AU - Bosch, R. A.

AU - Ganger, G. G.

AU - Thornburg, J. L.

AU - Brundage, J. R.

AU - Sullivan, D.

AU - Neal, H. A.

AU - Shephard, R. L.

AU - Keane, C. J.

AU - Osterheld, A. L.

AU - Eder, D. C.

AU - Matthews, Dennis L

PY - 1992

Y1 - 1992

N2 - In the course of conducting laser-target interaction experiments at 20-ps pulse length using Al and Mg targets, to determine the ionization balance of these elements, time-resolved K-shell spectral line strengths were obtained, suggesting population inversions between excited levels in both He-like and H-like ions. Effects of resonance-line opacities need to be analyzed in more detail, but opacity effects alone do not account for the anomalous line-intensity ratios that are observed to persist 200–300 ps after the laser pulse. Comparisons with 50-ps and 100-ps pulse shots do not show evidence of inversion, although nonequilibrium spectral lineintensity distributions are observed.

AB - In the course of conducting laser-target interaction experiments at 20-ps pulse length using Al and Mg targets, to determine the ionization balance of these elements, time-resolved K-shell spectral line strengths were obtained, suggesting population inversions between excited levels in both He-like and H-like ions. Effects of resonance-line opacities need to be analyzed in more detail, but opacity effects alone do not account for the anomalous line-intensity ratios that are observed to persist 200–300 ps after the laser pulse. Comparisons with 50-ps and 100-ps pulse shots do not show evidence of inversion, although nonequilibrium spectral lineintensity distributions are observed.

UR - http://www.scopus.com/inward/record.url?scp=0041896465&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0041896465&partnerID=8YFLogxK

U2 - 10.1364/JOSAB.9.001278

DO - 10.1364/JOSAB.9.001278

M3 - Article

AN - SCOPUS:0041896465

VL - 9

SP - 1278

EP - 1282

JO - Journal of the Optical Society of America B: Optical Physics

JF - Journal of the Optical Society of America B: Optical Physics

SN - 0740-3224

IS - 8

ER -

Evidence for population inversions in Al and Mg by laser irradiation at 20-ps pulse lengths

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this