High efficiency multikilojoule HF chemical lasers using an electron beam initiated low-pressure mixture of H2/F2/NF3 or H2/F2/SF6

Fumihiko Kannari; Hirohito Inagaki; Minoru Obara

doi:10.1063/1.96576

High efficiency multikilojoule HF chemical lasers using an electron beam initiated low-pressure mixture of H₂/F₂/NF₃ or H₂/F₂/SF₆

Fumihiko Kannari, Hirohito Inagaki, Minoru Obara

Department of Electronics and Electrical Engineering

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

11 Citations (Scopus)

Abstract

High electrical and high chemical efficiencies were simultaneously achieved for the multikilojoule HF chemical laser using a Lambda-type (inclined type) electron beam initiation scheme. The optimum addition of NF₃ or SF₆ fluorine donor could increase both efficiencies and could reduce the total pressure of the laser gas mixture. The laser output obtained from the low-pressure mixture of H₂/F₂/O₂/NF ₃=30/208/62.5/70 (Torr) was 4.5 kJ in a 50-ns FWHM pulse width with an electrical laser efficiency of 226% and a chemical efficiency of 18.5%.

Original language	English
Pages (from-to)	266-268
Number of pages	3
Journal	Applied Physics Letters
Volume	48
Issue number	4
DOIs	https://doi.org/10.1063/1.96576
Publication status	Published - 1986

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "High efficiency multikilojoule HF chemical lasers using an electron beam initiated low-pressure mixture of H2/F2/NF3 or H2/F2/SF6",

abstract = "High electrical and high chemical efficiencies were simultaneously achieved for the multikilojoule HF chemical laser using a Lambda-type (inclined type) electron beam initiation scheme. The optimum addition of NF3 or SF6 fluorine donor could increase both efficiencies and could reduce the total pressure of the laser gas mixture. The laser output obtained from the low-pressure mixture of H2/F2/O2/NF 3=30/208/62.5/70 (Torr) was 4.5 kJ in a 50-ns FWHM pulse width with an electrical laser efficiency of 226% and a chemical efficiency of 18.5%.",

author = "Fumihiko Kannari and Hirohito Inagaki and Minoru Obara",

year = "1986",

doi = "10.1063/1.96576",

language = "English",

volume = "48",

pages = "266--268",

journal = "Applied Physics Letters",

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T1 - High efficiency multikilojoule HF chemical lasers using an electron beam initiated low-pressure mixture of H2/F2/NF3 or H2/F2/SF6

AU - Kannari, Fumihiko

AU - Inagaki, Hirohito

AU - Obara, Minoru

PY - 1986

Y1 - 1986

N2 - High electrical and high chemical efficiencies were simultaneously achieved for the multikilojoule HF chemical laser using a Lambda-type (inclined type) electron beam initiation scheme. The optimum addition of NF3 or SF6 fluorine donor could increase both efficiencies and could reduce the total pressure of the laser gas mixture. The laser output obtained from the low-pressure mixture of H2/F2/O2/NF 3=30/208/62.5/70 (Torr) was 4.5 kJ in a 50-ns FWHM pulse width with an electrical laser efficiency of 226% and a chemical efficiency of 18.5%.

AB - High electrical and high chemical efficiencies were simultaneously achieved for the multikilojoule HF chemical laser using a Lambda-type (inclined type) electron beam initiation scheme. The optimum addition of NF3 or SF6 fluorine donor could increase both efficiencies and could reduce the total pressure of the laser gas mixture. The laser output obtained from the low-pressure mixture of H2/F2/O2/NF 3=30/208/62.5/70 (Torr) was 4.5 kJ in a 50-ns FWHM pulse width with an electrical laser efficiency of 226% and a chemical efficiency of 18.5%.

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High efficiency multikilojoule HF chemical lasers using an electron beam initiated low-pressure mixture of H₂/F₂/NF₃ or H₂/F₂/SF₆

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