Details

Autor(en) / Beteiligte

• Nilson, P M
• Solodov, A A
• Myatt, J F
• Theobald, W
• Jaanimagi, P A
• Gao, L
• Stoeckl, C
• Craxton, R S
• Delettrez, J A
• Yaakobi, B
• Zuegel, J D
• Kruschwitz, B E
• Dorrer, C
• Kelly, J H
• Akli, K U
• Patel, P K
• Mackinnon, A J
• Betti, R
• Sangster, T C
• Meyerhofer, D D

Titel

Scaling hot-electron generation to high-power, kilojoule-class laser-solid interactions

Ist Teil von

• Physical review letters, 2010-12, Vol.105 (23), p.235001-235001, Article 235001

Ort / Verlag

United States

Erscheinungsjahr

2010

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• Thin-foil targets were irradiated with high-power (1 ≤ P(L) ≤ 210 TW), 10-ps pulses focused to intensities of I>10(18) W/cm(2) and studied with K-photon spectroscopy. Comparing the energy emitted in K photons to target-heating calculations shows a laser-energy-coupling efficiency to hot electrons of η(L-e) = 20 ± 10%. Time-resolved x-ray emission measurements suggest that laser energy is coupled to hot electrons over the entire duration of the incident laser drive. Comparison of the K-photon emission data to previous data at similar laser intensities shows that η(L-e) is independent of laser-pulse duration from 1 ≤ τ(p) ≤ 10 ps.