Observation of high soft x-ray drive in large-scale hohlraums at the National Ignition Facility

The first soft x-ray radiation flux measurements from hohlraums using both a 96 and a 192 beam configuration at the National Ignition Facility have shown high x-ray conversion efficiencies of ∼85%-90%. These experiments employed gold vacuum hohlraums, 6.4 mm long and 3.55 mm in diameter, heated with...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Physical review letters 2011-02, Vol.106 (8), p.085003-085003, Article 085003
Hauptverfasser: Kline, J L, Glenzer, S H, Olson, R E, Suter, L J, Widmann, K, Callahan, D A, Dixit, S N, Thomas, C A, Hinkel, D E, Williams, E A, Moore, A S, Celeste, J, Dewald, E, Hsing, W W, Warrick, A, Atherton, J, Azevedo, S, Beeler, R, Berger, R, Conder, A, Divol, L, Haynam, C A, Kalantar, D H, Kauffman, R, Kyrala, G A, Kilkenny, J, Liebman, J, Le Pape, S, Larson, D, Meezan, N B, Michel, P, Moody, J, Rosen, M D, Schneider, M B, Van Wonterghem, B, Wallace, R J, Young, B K, Landen, O L, MacGowan, B J
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The first soft x-ray radiation flux measurements from hohlraums using both a 96 and a 192 beam configuration at the National Ignition Facility have shown high x-ray conversion efficiencies of ∼85%-90%. These experiments employed gold vacuum hohlraums, 6.4 mm long and 3.55 mm in diameter, heated with laser energies between 150-635 kJ. The hohlraums reached radiation temperatures of up to 340 eV. These hohlraums for the first time reached coronal plasma conditions sufficient for two-electron processes and coronal heat conduction to be important for determining the radiation drive.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.106.085003