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  • 1
    Electronic Resource
    Electronic Resource
    Broad-band structured fluorescence from NaI (1988)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 89 (1988), S. 4478-4489 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The emission spectrum of a molecular beam of NaI has been measured following excitation by the 248 nm KrF line of an excimer laser. The fluorescence structure, and the lifetime (17±2 ns), indicate the presence of a bound upper state not previously characterized. We identify this state as correlating with Na(3 2P)+I(5 2P3/2) atoms. Through numerical simulation using a Morse function representation for the upper state, we have determined approximate values for the well depth of 530±260 cm−1, well breadth of ∼1.8 A(ring)−1, and equilibrium separation of ∼3.4 A(ring) for this state. As a consequence of the breadth of this weakly bound excited state the bound→bound line spectrum spans a broad spectral range (87% of the ground state well depth) entirely comparable with spectra attributed to free→bound emission.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.454787
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  • 2
    Electronic Resource
    Electronic Resource
    Emission from molecules and reaction intermediates in the process of falling apart (1982)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 86 (1982), S. 5027-5041 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100223a001
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  • 3
    Electronic Resource
    Electronic Resource
    Spin forbidden transitions in the K"a = 0 subband of NO"2 in the λ = 592.5 nm region
    Amsterdam : Elsevier
    Journal of Molecular Spectroscopy 102 (1983), S. 148-159 
    Details
    ISSN: 0022-2852
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0022-2852(83)90233-3
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  • 4
    Electronic Resource
    Electronic Resource
    Analysis of the perturbed NO"2 ^2B"2 〈- ^2A"1 system in the 591.4- to 592.9-nm region based on sub-Doppler laser spectroscopy
    Amsterdam : Elsevier
    Journal of Molecular Spectroscopy 97 (1983), S. 92-116 
    Details
    ISSN: 0022-2852
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0022-2852(83)90339-9
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  • 5
    Electronic Resource
    Electronic Resource
    Sub-Doppler polarization spectra of He, N"2 and Ar^+ recorded in discharges
    Amsterdam : Elsevier
    Chemical Physics Letters 166 (1990), S. 551-559 
    Details
    ISSN: 0009-2614
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0009-2614(90)87150-P
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  • 6
    Electronic Resource
    Electronic Resource
    The origin of hyperfine structure in excited electronic states of NO"2
    Amsterdam : Elsevier
    Chemical Physics Letters 114 (1985), S. 125-132 
    Details
    ISSN: 0009-2614
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0009-2614(85)85071-5
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  • 7
    Electronic Resource
    Electronic Resource
    Laser Resistance of Endotracheal Tubes II: ObservedTemperature Rise and Theoretical Explanation (1999)
    Springer
    Lasers in medical science 14 (1999), S. 24-31 
    Details
    ISSN: 1435-604X
    Keywords: Keywords: Anisotropic heat conduction; Laser induced heating of endotracheal tubes; Laser safety; Laser surgery; Vaporisation cooling
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Physics , Technology
    Notes: Abstract. An infrared camera was used to measure the temperature rise which takes place in endotracheal tubes exposed to a 20 W CO2 laser beam. It was seen that a metallic tube was heated up within 1 s to temperatures of 200–300°C which was very destructive to the PVC conduits inside the tube. A compound tube, on the other hand, reached temperatures of only 60°C at its inner surface after an exposure of 20 s. The experimental results can be explained by a physical model which uses the heat conduction and the heat capacities of both tubes. Whereas heat conduction in the metal tube is isotropic, heat conduction in the compound tube is anisotropic with a high conductivity along the outer surface and a low conductivity to the inside. This anisotropy and the cooling mechanism in the compound tube due to vaporising water are the reason for the high laser resistance of the tube.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s101030050017
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  • 8
    Electronic Resource
    Electronic Resource
    Laser Resistance of Endotracheal Tubes I: Experimental Results of a Compound Tube in Comparison to a Metallic Tube (1998)
    Springer
    Lasers in medical science 13 (1998), S. 242-252 
    Details
    ISSN: 1435-604X
    Keywords: Keywords: Laser-induced ignition of endotracheal tubes; Laser safety; Laser surgery; Upper aerodigestive tract; Vaporisation cooling
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Physics , Technology
    Notes: Abstract. Laser-induced ignition of endotracheal tubes is a serious problem in CO2 laser surgery of the upper aerodigestive tract. A new tube built of composite materials with a foam at its surface is protected by vaporisation of water from the wet foam. This tube and a flexible metallic tube of stainless steel were tested experimentally against the radiation of various lasers such as CO2, holmium/YAG, Nd/YAG, Nd/YAG frequency doubled in KD*P, argon and excimer. At laser power densities of 103 W/cm2, the shaft of the metallic tube was damaged within seconds whereas the compound tube was stable for more than 2 min; the damage threshold of the new tube was found to be at 3.2×106 W/cm2. While the compound tube was found to be sufficiently laser resistant, the metallic tube was found to exhibit functional damage, in particular the PVC inflation conduits inside of the tube were destroyed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s101030050003
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  • 9
    Electronic Resource
    Electronic Resource
    Photofragment spectroscopy of SO+ in the wavelength range from 308–514.5 nm (1992)
    Springer
    The European physical journal 22 (1992), S. 727-734 
    Details
    ISSN: 1434-6079
    Keywords: 33.80
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The direct photodissociation process SO++hv→S++O has been studied using the technique of ion photofragment spectroscopy. The kinetic energy distribution of the S+ photofragments has been measured for selected wavelengths in the range λ=308–514.5 nm. Transitions from the metastablea 4∏ state to the dissociative 14∑+ state as well as from theX 2∏ ground state to a higher-lying2∏ state have been observed. From the vibrationally resolved kinetic energy spectra, the potential curve of the repulsive 14∑+ state has been determined for the range of internuclear distancesR=3.0–4.5a 0. In addition, the analysis gives the vibrational population of the SO+ (a 4∏) ions after dissociative electron-impact ionization of SO2 in the low-pressure monoplasmatron ion source.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01437255
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  • 10
    Electronic Resource
    Electronic Resource
    High resolution molecular spectroscopy with lasers (1986)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 324 (1986), S. 479-485 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary Several sensitive detection techniques, such as excitation spectroscopy or resonant two-photon ionization spectroscopy are applied to laser spectroscopy with sub-Doppler resolution in collimated molecular beams. Due to internal cooling during the adiabatic expansion in supersonic beams rotational temperatures below 10 K can be reached which results in a drastic simplification of otherwise complex molecular spectra. Different schemes of optical-optical double resonance spectroscopy with two cw or pulsed narrow band lasers are discussed which allow the unambiguous assignment of perturbed molecular spectra. The techniques are illustrated by their application to NO2, SO2, Cs2 and to the study of Rydberg states of Li2.
    Notes: Zusammenfassung Empfindliche Nachweismethoden der Laserspektroskopie, wie z. B. die Anregungsspektroskopie oder die resonante Zweiphotonen-Ionisation werden angewandt auf die Doppler-freie Untersuchung kleiner Moleküle, wie NO2 und SO2 in kollimierten Überschallstrahlen. Durch die drastische Abkühlung bei der adiabatischen Expansion können Rotationstemperaturen unter 10 K erreicht werden, was die Liniendichte in den Spektren stark reduziert und damit die Analyse der Spektren wesentlich vereinfacht. Verschiedene Techniken der optischen-optischen Doppelresonanz-Spektroskopie mit zwei kontinuierlichen oder gepulsten Lasern werden illustriert am Beispiel der Untersuchung von Rydberg-Zuständen von Li2 und des langreichweitigen Potentials von Cs2. Der Vorteil dieser Techniken für die Analyse komplexer Molekülspektren wird diskutiert.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00474120
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