Angular energy distribution and temporal evolution of pulses emitted from low-{ital Z} neonlike {ital J}=0{endash}1 x-ray lasers
- Max-Planck-Institut fuer Quantenoptik, Hans-Kopfermann-Strasse 1, D-85748 Garching (Germany)
We report a systematic investigation of the angular energy distribution and temporal evolution of pulses emitted from low-{ital Z} neonlike {ital J}=0{endash}1 lasers by comparing prepulse-induced lasing in different materials (S, Cl, Ca, Ti, Ni, Cu, and Zn) and at different driving energies in the main pulse and the prepulse. It is found that with a main pulse energy of 350{plus_minus}35 J and a prepulse energy of 50{plus_minus}5 J, the laser peaks about 4 mrad off axis with a divergence of 4.5{endash}7.5 mrad for the low-{ital Z} materials S, Cl, Ca, Ti, and Ni. Under the same conditions for Cu, Zn, and Ge the laser peaks about 6{endash}7 mrad off axis with a divergence of 5{endash}8.2 mrad. The lasing pulse durations range from 146 to 349 ps for {ital Z}=30{endash}16 and peak at 237{endash}413 ps before the peak of the {ital L}-band emission or the {ital J}=2{endash}1 lasing line. The beam deflection and divergence, as well as the pulse duration are quite insensitive to the energies of the main pulse and the prepulse. However, a lower driving main pulse energy brings lasing close to the peak of the {ital L}-band emission. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 434779
- Journal Information:
- Physical Review A, Journal Name: Physical Review A Journal Issue: 6 Vol. 54; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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