Recombination effects in an expanding laser-produced plasma

Payne, G. L.; Perez, J. D.; Sharp, T. E.; Watson, B.A.

doi:10.1063/1.325539

Cited by 21 publications

(2 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This question was examined in detail in Latyshev and Roudskoy (1985), where it was shown that the well-known expression for E* proposed in Zeldovich and Raizer (1966) and applied by some authors in their calculations (see, e.g., Goforth & Hammerling 1976;Payne et al 1978) gives too high a value for this energy. This question was examined in detail in Latyshev and Roudskoy (1985), where it was shown that the well-known expression for E* proposed in Zeldovich and Raizer (1966) and applied by some authors in their calculations (see, e.g., Goforth & Hammerling 1976;Payne et al 1978) gives too high a value for this energy.…”

Section: Plasma Expansion Into Vacuummentioning

confidence: 99%

General features of highly charged ion generation in laser-produced plasmas

Roudskoy

1996

Laser Part. Beams

View full text Add to dashboard Cite

The simple physical model of highly charged ion generation in plasma produced by laser irradiation with long pulse duration (>1 ns) and moderate intensities (<10 15 /X 2 W/cm 2^m2 ) is presented. In the frame of a single theory, most of the experimental results on plasma diagnostics are described in total. It is shown that plasma temperatures, ion charge states, and ion velocities as well as angular distributions of highly charged ions can be explained with good accuracy by collisional absorption of laser energy, hydrodynamic acceleration of forming plasma, and three-body recombination through highly exited levels during plasma expansion into vacuum. The general scalings for plasma parameters are derived on the basis of the model proposed.

show abstract

Section: Plasma Expansion Into Vacuummentioning

confidence: 99%

General features of highly charged ion generation in laser-produced plasmas

Roudskoy

1996

Laser Part. Beams

View full text Add to dashboard Cite

show abstract

“…More recently [23,24], researchers have conducted studies at similar laser powers but employed charged particle analyzers rather than spectroscopic instruments. While these experiments determined velocities on in the same range as for this work, a notable distinction is that these particle measurements were made at a much larger distance from the target and were capable of extracting information on all of the ion charge states.…”

mentioning

confidence: 99%

Soft x-ray emission from postpulse expanding laser-produced plasmas

Weaver

Feldman

Mostovych

et al. 2003

Review of Scientific Instruments

View full text Add to dashboard Cite

Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to a penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. A new diagnostic spectrometer has been developed at the Naval Research Laboratory (NRL) to measure the time resolved absolute intensity of radiation emitted by the Nike laser irradiated targets. The spectrometer consists of a dispersive transmission grating of 2500 lines/mm or 5000 lines/mm and a detection system consisting of an absolutely calibrated Si photodiode array and a CCD camera. In this paper, this spectrometer was used to study the spatial distribution of soft x-ray radiation from low Z elements (primarily carbon) that lasted tens of nanoseconds after the main laser illumination was over. Using the newly developed spectrometer, we recorded soft x-ray emission as a function of the target material and target orientation with respect to the incoming laser beam and the spectrometer line of sight. While a number of spectral features have been identified in the data, the instrument's combined temporal and spatial resolution led to the observation of the plasma expansion from CH targets for up to ~ 25 ns after the cessation of the main laser pulse. The inferred plasma expansion velocities are slightly higher than those previously reported. REPORT DATE AbstractA new diagnostic spectrometer has been developed at the Naval Research Laboratory (NRL) to measure the time resolved absolute intensity of radiation emitted by the Nike laser irradiated targets. The spectrometer consists of a dispersive transmission grating of 2500 lines/mm or 5000 lines/mm and a detection system consisting of an absolutely calibrated Si photodiode array and a CCD camera. In this paper, this spectrometer was used to study the spatial distribution of soft x-ray radiation from low Z elements (primarily carbon) that lasted tens of nanoseconds after the main laser illumination was over. Using the newly developed spectrometer, we recorded soft x-ray emission as a function of the target material and target orientation with respect to the incoming laser beam and the spectrometer line of sight. While a number of spectral features have been identified in the data, the instrument's combined temporal and spatial resolution led to the observation of the plasma expansion from CH targets for up to ~ 25 ns after the cessation of the main laser...

show abstract