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  • 32.70.Fw  (8)
  • Mercury  (2)
  • 07.65-b  (1)
  • 07.85  (1)
  • 1
    Electronic Resource
    Electronic Resource
    High-resolution VUV spectroscopy using pulsed laser sources (1994)
    Springer
    Applied physics 59 (1994), S. 433-436 
    Details
    ISSN: 1432-0649
    Keywords: 42.62.Fi ; 35.10.Fk ; 32.70.Fw
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The resonance spectroscopic techniques - level-crossing, optical double resonance and quantum-beat spectroscopy - have been employed following pulsed laser excitation. The use of pulsed lasers has enabled spectroscopic studies of atomic structures and radiative lifetimes in the UV/VUV spectral region.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01081065
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Imaging using hard X-rays from a laser-produced plasma (1995)
    Springer
    Applied physics 61 (1995), S. 333-338 
    Details
    ISSN: 1432-0649
    Keywords: 07.85 ; 52.00
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Imaging of technical and biological objects using hard X-rays from a laser-produced plasma source is demonstrated. Magnification radiography and single-shot imaging of biological samples are feasible with the source, which utilised focused radiation from a short-pulse terawatt laser. Differential imaging with element specificity and a new projection geometry for X-ray radiography are proposed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01081532
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Spatial mapping of flame radical emission using a spectroscopic multi-colour imaging system (1991)
    Springer
    Applied physics 53 (1991), S. 260-264 
    Details
    ISSN: 1432-0649
    Keywords: 07.65-b ; 07.20.ka ; 33.20.kf
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract An intensified multi-colour digital imaging system allowing simultaneous monitoring of light from an object in four wavelength bands was used for flame emission studies. The spatial distribution of the molecular emission from different flame radicals, such as OH, C2, CH, and CN was recorded, also in the presence of a heavy background due to Planck-radiating soot particles. Exposure times down to 8 μs could be reached allowing studies of turbulent flames. The imaging spectroscopic recordings were supported by simultaneous point monitoring of the full emission spectrum. A technique for imaging flow measurements using a spectroscopic gas correlation technique is proposed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00357147
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Mercury Degassing Rate From Mineralized Areas in the Mediterranean Basin (1997)
    Springer
    Water, air & soil pollution 93 (1997), S. 59-66 
    Details
    ISSN: 1573-2932
    Keywords: Mercury ; Atmosphere ; Mine ; Lidar
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Knowledge of the natural emissions of mercury in the Mediterranean basin, which has largecinnabar anomalies, has particular weight as these deposits could be an important source ofatmospheric mercury. Data on the degassing rate of mercury from soils sampled both inmineralized areas (Mt. Amiata, Italy and Almaden, Spain) and rural areas are reported.Measurements were carried out ‘in situ’ using a transparent flux chamber and collecting thegaseous mercury on gold collectors. The highest values were observed in Almaden over theroasted cinnabar banks (up to 100 µg/m2h) from past and present mining activity. In Italianrural areas the values of the volatilization rate of mercury are on the order of few ng/m2h. Thedegassing rate was observed to be strongly dependent on the ambient temperature and not onlyseasonal but also daily variations were measured in all the studied areas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1022107205659
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Mercury degassing rate from mineralized areas in the Mediterranean basin (1997)
    Springer
    Water, air & soil pollution 93 (1997), S. 59-66 
    Details
    ISSN: 1573-2932
    Keywords: Mercury ; Atmosphere ; Mine ; Lidar
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Knowledge of the natural emissions of mercury in the Mediterranean basin, which has large cinnabar anomalies, has particular weight as these deposits could be an important source of atmospheric mercury. Data on the degassing rate of mercury from soils sampled both in mineralized areas (Mt. Amiata, Italy and Almaden, Spain) and rural areas are reported. Measurements were carried out ‘in situ’ using a transparent flux chamber and collecting the gaseous mercury on gold collectors. The highest values were observed in Almaden over the roasted cinnabar banks (up to 100μg/m2h) from past and present mining activity. In Italian rural areas the values of the volatilization rate of mercury are on the order of few ng/m2h. The degassing rate was observed to be strongly dependent on the ambient temperature and not only seasonal but also daily variations were measured in all the studied areas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02404747
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Radiative lifetime determination for the 3s4p-1P1 state of magnesium using pulsed level-crossing spectroscopy (1993)
    Springer
    The European physical journal 25 (1993), S. 127-129 
    Details
    ISSN: 1434-6079
    Keywords: 32.70.Fw ; 32.80.Bx
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The natural radiative lifetime of the 3s4p 1 P 1 level of neutral magnesium was measured by pulsed level-crossing spectroscopy at the short excitation wavelength of 202.6 nm. We obtained τ=13.4(5) ns for this state, strongly deviating from a previous beam-foil result, but in good agreement with a multi-configuration Hartree-Fock calculation. A discussion of the applicability of the pulsed Hanle effect method is given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01450164
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Determination of radiative lifetimes in the 3snp 1 P 1 sequence of Mg I using time-resolved VUV laser spectroscopy (1993)
    Springer
    The European physical journal 27 (1993), S. 329-331 
    Details
    ISSN: 1434-6079
    Keywords: 32.70.Fw
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The radiative lifetimes of the states in the (n=5–8) 3snp 1 P 1 sequence of neutral magnesium were investigated using time-resolved laser-induced fluorescence. Excitation from the 3s 2 1 S 0 ground state was performed using VUV radiation, which was produced by resonant sum-difference frequency mixing in a krypton gas cell. We find τ(n=5): 54(3) ns, τ(n=6): 140(10) ns, τ(n=7): 290(20) ns. τ(n=8): 475(40) ns. These results were found to be in fair agreement with a Multi Configuration Hartree-Fock (MCHF) calculation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01437465
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Studies on radiative lifetimes in the 4d 10 ns2 S and 4d 10 nd 2 D sequences of neutral silver (1990)
    Springer
    The European physical journal 17 (1990), S. 1-4 
    Details
    ISSN: 1434-6079
    Keywords: 32.70.Fw
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We have performed lifetime measurements in the sequences of2 S 1/2 and2 D 3/2 states for the alkali-like 4d 10 ns,nd configurations of neutral silver. Selective stepwise excitations from the 4d 10 5s 2 S 1/2 ground state were performed using two pulsed dye lasers. Optical transients were recorded and evaluated with regard to the decay time. The lifetime results are compared with those of a theoretical study in which a model potential has been used to describe the polarisation of the 4d shell.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01437488
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Accurate time-resolved laser spectroscopy on sputtered metal atoms (1989)
    Springer
    The European physical journal 11 (1989), S. 287-293 
    Details
    ISSN: 1434-6079
    Keywords: 32.70.Fw ; 42.50.Md
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The delayed coincidence photon counting technique, employing a picosecond tunable dye laser as an excitation source, has been used for accurate determinations of radiative lifetimes of excited states. Excitation from meta-stable states of sputtered atoms was employed. We obtained for Cu: τ(3d 10 4p 2 P 1/2 = 7.27(0.06) ns, τ(3d 10 4p 2 P 3/2) = 7.17(0.06) ns and for Fe: τ(3d 7 4p y 3 F 2)= 9.06(0.16) ns, τ(3d 7 4p y 3 F 3) = 9.06(0.13) ns and τ(3d 7 4p y 3 F 4) = 9.11 (0.16) ns. Also, the ability of this technique to record quantum beats at frequencies up to 1 GHz is demonstrated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01438501
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    Oscillator strengths for resonance transitions in neutral selenium and tellurium derived from time-resolved laser spectroscopy (1992)
    Springer
    The European physical journal 23 (1992), S. 29-32 
    Details
    ISSN: 1434-6079
    Keywords: 32.70.Fw
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We have measured radiative lifetimes for selenium and tellurium resonance levels by using short pulse laser excitation in differentially heated resonance cells. We obtained τ(3 S 1 Se I)=2.9(5) ns and τ(3 S 1 Te I)=3.1(5) ns, which together with branching ratio values given by Ubelis and Berzinsh yield the absorption oscillator strengthf abs(Se I, 196.0 nm)=0.074(16) andf abs(Te I, 214.3 nm)=0.098(17).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01436699
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    Paper (German National Licenses)
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