Energetic electrons and x-ray photons from multiterawatt Ti:sapphire lasers

Journal Article · Mon May 31 04:00:00 EDT 1999 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE1999V029N05ABEH001505· OSTI ID:21442623

Nickles, P V; Kalachnikov, M P; Warwick, P J; Janulewicz, K A; Sandner, W ^[1]; Jahnke, U; Hilscher, D ^[2]; Schnurer, M ^[3]; Nolte, R ^[4]; Rousse, A ^[5]

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1. Max-Born-Institut, Berlin (Germany)
2. Hahn-Meitner-Institut, Berlin (Germany)
3. Technische Universitat Wien, Vienna (Austria)
4. Physikalisch-Technische Bundesanstalt, Braunschweig (Germany)
5. Laboratoire d'Optique Appliquee, ENSTA-Centre del'Yvette, Palaiseau (France)

The energy distribution and yield of electrons and hard x-ray photons were investigated by irradiating tungsten and tantalum targets with {approx} 30 fs pulses in the intensity range 10{sup 18} - 10{sup 19} W cm{sup -2} by using the Laboratoire d'Optique Appliquee (LOA) as well as the Max Born Institut (MBI) multiterawatt Ti:sapphire lasers. For the measurement of the hard x-ray emission in the energy range from 15 keV to 700 keV at the LOA a 9-channel spectrometer of calibrated thermoluminescence detectors (TLD) was used. The scaling of the hard x-rays was studied by varying the incident laser energy within one order of magnitude and the pulsewidth by a factor of 5. The hot electron output was investigated in the range 300 keV - 1 MeV with the new MBI Ti:sapphire laser by using a time-of-flight spectrometer. The results indicate a sensitive interplay between the temporal laser shape and laser intensity. (interaction of laser radiation with matter. laser plasma)

• OSTI ID: 21442623
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 5 Vol. 29; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BOSONS
CORUNDUM
DOSEMETERS
ELECTROMAGNETIC RADIATION
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
EMISSION
ENERGY RANGE
ENERGY SPECTRA
FERMIONS
HARD X RADIATION
IONIZING RADIATIONS
KEV RANGE
LASER RADIATION
LASERS
LEPTONS
LUMINESCENCE
LUMINESCENT DOSEMETERS
MASSLESS PARTICLES
MEASURING INSTRUMENTS
METALS
MEV RANGE
MINERALS
OXIDE MINERALS
PHOTON EMISSION
PHOTONS
PULSES
RADIATIONS
REFRACTORY METALS
SAPPHIRE
SPECTRA
SPECTROMETERS
TAIL ELECTRONS
TANTALUM
THERMOLUMINESCENCE
THERMOLUMINESCENT DOSEMETERS
TIME-OF-FLIGHT SPECTROMETERS
TRANSITION ELEMENTS
TUNGSTEN
X RADIATION