Study of target heating induced by fast electrons in mass limited targets

Journal Article · Tue Feb 02 00:00:00 EST 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3326323· OSTI ID:21370966

Alessio, Morace; Dimitri, Batani; Renato, Redaelli ^[1]; Alexander, Magunov ^[2]; Claude, Fourment; Jorge, Santos Joao; Gerard, Malka ^[3]; Alain, Boscheron ^[4]; Alexis, Casner ^[5]; Wigen, Nazarov ^[6]; Tommaso, Vinci ^[7]; Yasuaki, Okano; Yuichi, Inubushi; Hiroaki, Nishimura ^[8]; Alessandro, Flacco ^[9]; Chris, Spindloe; Martin, Tolley ^[10]

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1. University of Milano Bicocca (Italy)
2. General Physical Institute, Russian Academy of Sciences, Moscow (Russian Federation)
3. Universite de Bordeaux-CNRS-CEA, CELIA, Talence (France)
4. CEA/CESTA Le BARP (France)
5. CEA-DAM, Bruyres-le-Chatel (France)
6. University of St. Andrews (United Kingdom)
7. CEA, Bruyeres le Chatel (France)
8. Institute of Laser Engineering , Osaka University (Japan)
9. LOA, Ecole Polytechnique, Palaiseau (France)
10. RUTHERFORD Appleton Laboratory (United Kingdom)

We studied the induced plasma heating in three different kind of targets: mass limited, foam targets and large mass targets. The experiment was performed at Alise laser facility of CEA/CESTA. The laser system emitted a {approx}1-ps pulse with {approx}10 J energy at a wavelength of {approx}1 {mu}m. Mass limited targets had three layers with thickness 10 {mu}m C{sub 8}H{sub 8}, 1 {mu}m C{sub 8}H{sub 7}Cl, 10 {mu}m C{sub 8}H{sub 8} with size 100 {mu}mx100 {mu}m. Detailed spectroscopic analysis of X-rays emitted from the Cl tracer showed that it was possible to heat up the plasma mass limited targets to a temperature {approx}250 eV with density {approx}10{sup 21} cm{sup -3}. The plasma heating is only produced by fast electron transport in the target, being the 10 {mu}m C{sub 8}H{sub 8} overcoating thick enough to prevent any possible direct irradiation of the tracer layer even taking into account mass-ablation due to the pre-pulse. These results demonstrate that with mass limited targets is possible to generate a plasma heated up to several hundreds eV. It is also very important for research concerning high energy density phenomena and for fast ignition (in particular for the study of fast electrons transport and induced heating).

• OSTI ID: 21370966
• Journal Information: AIP Conference Proceedings, Vol. 1209, Issue 1; Conference: 2. international conference on ultra-intense laser interaction science, Frascati (Italy), 24-29 May 2009; Other Information: DOI: 10.1063/1.3326323; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ABLATION
ELECTRONS
ENERGY DENSITY
EV RANGE
FOAMS
INERTIAL CONFINEMENT
IRRADIATION
LASER TARGETS
LASER-PRODUCED PLASMA
LASERS
PLASMA DENSITY
PLASMA HEATING
STYRENE
X RADIATION
ALKYLATED AROMATICS
AROMATICS
COLLOIDS
CONFINEMENT
DISPERSIONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
HEATING
HYDROCARBONS
IONIZING RADIATIONS
LEPTONS
ORGANIC COMPOUNDS
PLASMA
PLASMA CONFINEMENT
RADIATIONS
TARGETS