Petawatt laser direct heating of imploded plasmas and thermal neutron enhancement

Yoneyoshi Kitagawa, Shin Akamatsu, Wataru Sakamoto, Kazuo A. Tanaka, Ryosuke Kodama, Hiroaki Nishimura, Yuichi Inubushi, Mitsuo Nakai, Takeshi Watari, Takayoshi Norimatsu, Atsushi Sunahara, Yasuhiko Sentoku

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

To heat an uniformly imploded deuterated polystyrene shell target, Petawatt laser illumination timing is scanned from the implosion, through stagnation to expansion or disruption phases. After 80 ± 20 picosecond from the onset of the stagnation phase but yet within it, thermal neutrons are four times enhanced from l × 106. The timing exactly agrees with that of X-ray emission from the core. In the stagnation phase, beam fusion neutrons reduced to 1.5 times the thermal one. Temporal behaviours of Bremsstrahlung due to hot electrons and laser backscatterings support the the timing.

Original languageEnglish
Title of host publicationInertial Fusion Sciences and Applications 2003
EditorsB.A. Hammel, D.D. Meyerhofer, J. Meyer-ter-Vehn
Pages387-393
Number of pages7
Publication statusPublished - 2004
Externally publishedYes
EventThird International Conference on Inertial Fusion Sciences and Applications, IFSA 2003 - Monterey, CA, United States
Duration: Sep 7 2003Sep 12 2003

Other

OtherThird International Conference on Inertial Fusion Sciences and Applications, IFSA 2003
CountryUnited States
CityMonterey, CA
Period9/7/039/12/03

Fingerprint

Neutrons
Plasmas
Heating
Lasers
Hot electrons
Backscattering
Polystyrenes
Fusion reactions
Lighting
X rays
Hot Temperature

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Kitagawa, Y., Akamatsu, S., Sakamoto, W., Tanaka, K. A., Kodama, R., Nishimura, H., ... Sentoku, Y. (2004). Petawatt laser direct heating of imploded plasmas and thermal neutron enhancement. In B. A. Hammel, D. D. Meyerhofer, & J. Meyer-ter-Vehn (Eds.), Inertial Fusion Sciences and Applications 2003 (pp. 387-393)

Petawatt laser direct heating of imploded plasmas and thermal neutron enhancement. / Kitagawa, Yoneyoshi; Akamatsu, Shin; Sakamoto, Wataru; Tanaka, Kazuo A.; Kodama, Ryosuke; Nishimura, Hiroaki; Inubushi, Yuichi; Nakai, Mitsuo; Watari, Takeshi; Norimatsu, Takayoshi; Sunahara, Atsushi; Sentoku, Yasuhiko.

Inertial Fusion Sciences and Applications 2003. ed. / B.A. Hammel; D.D. Meyerhofer; J. Meyer-ter-Vehn. 2004. p. 387-393.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kitagawa, Y, Akamatsu, S, Sakamoto, W, Tanaka, KA, Kodama, R, Nishimura, H, Inubushi, Y, Nakai, M, Watari, T, Norimatsu, T, Sunahara, A & Sentoku, Y 2004, Petawatt laser direct heating of imploded plasmas and thermal neutron enhancement. in BA Hammel, DD Meyerhofer & J Meyer-ter-Vehn (eds), Inertial Fusion Sciences and Applications 2003. pp. 387-393, Third International Conference on Inertial Fusion Sciences and Applications, IFSA 2003, Monterey, CA, United States, 9/7/03.
Kitagawa Y, Akamatsu S, Sakamoto W, Tanaka KA, Kodama R, Nishimura H et al. Petawatt laser direct heating of imploded plasmas and thermal neutron enhancement. In Hammel BA, Meyerhofer DD, Meyer-ter-Vehn J, editors, Inertial Fusion Sciences and Applications 2003. 2004. p. 387-393
Kitagawa, Yoneyoshi ; Akamatsu, Shin ; Sakamoto, Wataru ; Tanaka, Kazuo A. ; Kodama, Ryosuke ; Nishimura, Hiroaki ; Inubushi, Yuichi ; Nakai, Mitsuo ; Watari, Takeshi ; Norimatsu, Takayoshi ; Sunahara, Atsushi ; Sentoku, Yasuhiko. / Petawatt laser direct heating of imploded plasmas and thermal neutron enhancement. Inertial Fusion Sciences and Applications 2003. editor / B.A. Hammel ; D.D. Meyerhofer ; J. Meyer-ter-Vehn. 2004. pp. 387-393
@inproceedings{11d135f61c8349aa8c706c023dc80856,
title = "Petawatt laser direct heating of imploded plasmas and thermal neutron enhancement",
abstract = "To heat an uniformly imploded deuterated polystyrene shell target, Petawatt laser illumination timing is scanned from the implosion, through stagnation to expansion or disruption phases. After 80 ± 20 picosecond from the onset of the stagnation phase but yet within it, thermal neutrons are four times enhanced from l × 106. The timing exactly agrees with that of X-ray emission from the core. In the stagnation phase, beam fusion neutrons reduced to 1.5 times the thermal one. Temporal behaviours of Bremsstrahlung due to hot electrons and laser backscatterings support the the timing.",
author = "Yoneyoshi Kitagawa and Shin Akamatsu and Wataru Sakamoto and Tanaka, {Kazuo A.} and Ryosuke Kodama and Hiroaki Nishimura and Yuichi Inubushi and Mitsuo Nakai and Takeshi Watari and Takayoshi Norimatsu and Atsushi Sunahara and Yasuhiko Sentoku",
year = "2004",
language = "English",
isbn = "0894486861",
pages = "387--393",
editor = "B.A. Hammel and D.D. Meyerhofer and J. Meyer-ter-Vehn",
booktitle = "Inertial Fusion Sciences and Applications 2003",

}

TY - GEN

T1 - Petawatt laser direct heating of imploded plasmas and thermal neutron enhancement

AU - Kitagawa, Yoneyoshi

AU - Akamatsu, Shin

AU - Sakamoto, Wataru

AU - Tanaka, Kazuo A.

AU - Kodama, Ryosuke

AU - Nishimura, Hiroaki

AU - Inubushi, Yuichi

AU - Nakai, Mitsuo

AU - Watari, Takeshi

AU - Norimatsu, Takayoshi

AU - Sunahara, Atsushi

AU - Sentoku, Yasuhiko

PY - 2004

Y1 - 2004

N2 - To heat an uniformly imploded deuterated polystyrene shell target, Petawatt laser illumination timing is scanned from the implosion, through stagnation to expansion or disruption phases. After 80 ± 20 picosecond from the onset of the stagnation phase but yet within it, thermal neutrons are four times enhanced from l × 106. The timing exactly agrees with that of X-ray emission from the core. In the stagnation phase, beam fusion neutrons reduced to 1.5 times the thermal one. Temporal behaviours of Bremsstrahlung due to hot electrons and laser backscatterings support the the timing.

AB - To heat an uniformly imploded deuterated polystyrene shell target, Petawatt laser illumination timing is scanned from the implosion, through stagnation to expansion or disruption phases. After 80 ± 20 picosecond from the onset of the stagnation phase but yet within it, thermal neutrons are four times enhanced from l × 106. The timing exactly agrees with that of X-ray emission from the core. In the stagnation phase, beam fusion neutrons reduced to 1.5 times the thermal one. Temporal behaviours of Bremsstrahlung due to hot electrons and laser backscatterings support the the timing.

UR - http://www.scopus.com/inward/record.url?scp=19944430801&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=19944430801&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:19944430801

SN - 0894486861

SN - 9780894486869

SP - 387

EP - 393

BT - Inertial Fusion Sciences and Applications 2003

A2 - Hammel, B.A.

A2 - Meyerhofer, D.D.

A2 - Meyer-ter-Vehn, J.

ER -