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  • Articles: DFG German National Licenses  (2)
  • 1990-1994
  • 1985-1989  (2)
  • 1988  (2)
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  • Articles: DFG German National Licenses  (2)
Material
Years
  • 1990-1994
  • 1985-1989  (2)
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Lasers pumped by ion beams (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 63 (1988), S. 2206-2211 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Eleven rare-gas laser lines in the near infrared and the 1.45-μm line in carbon have been pumped with an intense 3.6-MeV He+ dc beam from the Stuttgart Dynamitron accelerator. In one experimental run a 40 Ar beam was also successfully tested. Laser action was observed in gas mixtures up to several hundred mbar total pressure using a differentially pumped gas target. A maximum output power of 170 mW was observed from He-Ar laser lines. This shows that ion beam accelerators which are widely used in nuclear physics can also be used as a versatile pumping source for lasers. The maximum power which can presently be provided by the Stuttgart accelerator is about 1 kW (dc). The observed laser lines in the infrared region between 1.15 and 3.07 μm are known from low-pressure electrical discharge lasers. The excitation scheme at the relatively high pressures used had been investigated in connection with nuclear pumped lasers by other authors. Ion beam pumping is found to be an interesting pumping method in itself and at present a suitable way to optimize the conditions relevant for nuclear-pumped lasers as the measurements do not have to be performed in the vicinity of a high flux nuclear reactor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.341087
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Absolute cross section of the3He(α,γ)7Be reaction (1988)
    Springer
    The European physical journal 329 (1988), S. 243-254 
    Details
    ISSN: 1434-601X
    Keywords: 25.55.-e ; 27.10 ; 27.20
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The absolute cross section σ(E) of the3He(α, γ)7Be reaction has been measured fromE c.m. =195 to 686 keV. The studies employed both a supersonic jet gas target and an extended gas target, and were carried out by the observation of the prompt capture γ-ray transitions as well as the7Be residual nuclei. The absolute cross sections deduced from the capture γ-rays are in good agreement with most previous work and remove a discrepancy with other earlier work. In comparison, the σ(E) values obtained from the7Be residual nuclei are systematically higher, suggesting a small production of additional7Be by contaminant reactions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01283781
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    Paper (German National Licenses)
    Fulltext
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