Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Relaxation of 6 2P3/2 metastable and 6 2P1/2 ground state atomic thallium produced in the photodissociation of thallium halide vapors at high densities (1986)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 85 (1986), S. 6504-6509 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Decay rates of the 6 2P3/2 metastable and 6 2P1/2 ground state atomic thallium densities produced in UV photodissociation (at λ193, 222, 249, 308, and 353 nm) of TlI, TlBr, and TlCl molecular vapors have been measured for vapor densities from 1013 to 1017 cm−3. Dominant relaxation processes have been identified as (i) for the metastable state, collisional deexcitation by thallium halide molecules at high halide densities (≥1015 cm−3) and by free halogens and trace impurities at lower halide densities and (ii) for the ground state, diffusion in the ambient (argon/thallium halide) gas at high halide densities and volume reassociation under certain conditions at low halide densities. Cross sections and diffusion coefficients are evaluated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.451430
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Characteristics of discharge-excited barium vapor lasers operating in the 1–5 μm spectral band (1992)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 72 (1992), S. 5545-5554 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Laser action from barium vapor has been investigated using small-scale (20–40 cm−3) high-repetition-rate discharge-heated and low-repetition-rate externally-heated devices. Strongest output occurs at 1.13, 1.50, and 2.55 μm, with weaker emission at 2.92 and 4.72 μm. The range of discharge conditions for which laser action occurs at these wavelengths is described and the temporal occurrence of laser output is presented. The implications of this study to the future development of barium lasers are considered.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.351952
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Cross sections for production of atomic thallium states in photodissociation of thallium halides (1986)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 84 (1986), S. 4299-4303 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The cross sections for production of 62P1/2 and 62P3/2 ground and metastable atomic thallium states via UV dissociation of the thallium halides TlCl, TlBr, and TlI have been measured at wavelengths 193, 222, 249, 308, and 353 nm using time-resolved atomic resonance absorption spectroscopy. The measured cross sections, which were independent of halide densities up to densities ∼1017 cm−3, were found to represent only 10% to 36% of the total UV absorption cross section at the appropriate wavelength.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.450052
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    ORGANISATIONAL CONTROL, DIFFERING PERSPECTIVES: THE MANAGEMENT OF UNIVERSITTES (1988)
    Oxford, UK : Blackwell Publishing Ltd
    Financial accountability and management 4 (1988), S. 0 
    Details
    ISSN: 1468-0408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: Designing an accounting and information system (ACS) for a university is difficult, and whilst there is substantial evidence that formal systems can have dysfunctional effects, it is necessary to precede any design or critique of an ACS by clarifying the underlying managerial perspective that is being applied to the organisation. In this paper a number of managerial perspectives are developed and illustrated in relation to the management of universities. The approach is also contrasted with the management of health authorities. It is demonstrated that some authors provide a critique of the Jarratt proposals without illustrating the managerial perspective from which this is being done, and that whilst their organisational analysis may be insightful it does not add to the debate on how to manage universities or health authorities.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1468-0408.1988.tb00294.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Investigation of practical high repetition rate copper vapour lasers with external heating (1991)
    Springer
    Optical and quantum electronics 23 (1991), S. S539 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The characteristics of high repetition rate CVL devices incorporating passive external heating have been investigated. Pre-heating of the CVL plasma tube using external heating has been shown to significantly reduce CVL warm-up time, while supplementary heating of the CVL plasma tube using external heating allows efficient CVL operation with reduced discharge power input without any degradation in output power.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619648
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Stimulated Raman scattering of barium laser output in a silica fibre (1991)
    Springer
    Optical and quantum electronics 23 (1991), S. S563 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Strong stimulated Raman emission has been observed on three Stokes' lines at 1.608, 1.744 and 1.896μm from 12.6 km of single-mode silica fibre pumped at 1.50μm with the output of a pulsed barium vapour laser. A study has been made of the spectral distribution of fibre output as a function of peak input power to the fibre (up to 47 MW cm−2), and the results are compared to theoretical predictions. Incomplete conversion of the pump to first Stokes', and first to second Stokes', lines is observed despite the length of the fibre.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619651
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Effects of H2 buffer gas additive on repetition rate scaling of a copper vapour laser (1994)
    Springer
    Optical and quantum electronics 26 (1994), S. 1089-1100 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The variations in the output power of a copper vapour laser resulting from H2 additive to neon buffer gas are investigated for a wide range of pulse repetition frequencies (3.2 to 19.7 kHz). Small improvements in laser output power (9%) were observed for ∼2% H2-Ne admixture at low repetition frequency, these improvements becoming progressively larger (up to 250%) as the repetition rate increased. These observations are consistent with added H2 modifying the interpulse kinetics, thereby altering the spatiotemporal evolution of the output pulse. In particular, the observed average output power increases at elevated repetition rates owing to both increased laser pulse energy and increased optimum pulse repetition frequency.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00284505
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Characteristics of copper HyBrID-type lasers which use HCl reactive gas (1997)
    Springer
    Optical and quantum electronics 29 (1997), S. 991-998 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract We have investigated the output behaviour of a low temperature HyBrID-type copper laser operating with a flowing Ne–HCl reactive gas mixture. 15.5 W of average power was observed from a 19 mm bore device at 23 kHz PRF corresponding to a specific output power of 78 mW/cm3. The output power was 20–30% lower than that of the same device operating with an Ne–HBr mixture; however, it markedly exceeds the output of similar sized elemental copper vapour lasers (with or without hydrogen additive).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018546120757
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...