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  1. Article ; Online: Dissociative Recombination of K

    Eliyahu-Caspi, Gilead / Makov, Guy / Rosenwaks, Salman / Barmashenko, Boris D

    The journal of physical chemistry. A

    2022  Volume 126, Issue 34, Page(s) 5751–5760

    Abstract: Dissociative recombination (DR) of ... ...

    Abstract Dissociative recombination (DR) of K
    Language English
    Publishing date 2022-08-22
    Publishing country United States
    Document type Journal Article
    ISSN 1520-5215
    ISSN (online) 1520-5215
    DOI 10.1021/acs.jpca.2c05096
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Multi-transverse mode operation of alkali vapor lasers: modeling and comparison with experiments.

    Auslender, Ilya / Barmashenko, Boris D / Rosenwaks, Salman

    Optics express

    2017  Volume 25, Issue 17, Page(s) 19767–19779

    Abstract: In high-power diode pumped alkali lasers with stable resonators the radius of the pump beam is usually larger than that of the fundamental laser mode and thus several high order transverse modes of the resonator can participate in the lasing. A simple ... ...

    Abstract In high-power diode pumped alkali lasers with stable resonators the radius of the pump beam is usually larger than that of the fundamental laser mode and thus several high order transverse modes of the resonator can participate in the lasing. A simple optical model of multi-transverse mode operation of alkali vapor lasers is reported. The model is based on calculations of the pump and laser beam intensities in the gain medium, where the laser beam intensity is a linear combination of the azimuthally-symmetric Laguerre-Gaussian modes. It was applied to Ti:Sapphire and diode pumped cesium vapor lasers. The model predicts that for low pump power only the fundamental lasing mode oscillates. However, for higher pump powers several transverse modes participate in oscillation. The number and intensities of the oscillating modes as a function of the pump beam power and radius were found. The model predicts linear dependence of the laser power on the pump power, the values of the former being in agreement with the experimental results obtained for diode pumped cesium laser [Electron. Lett.44, 582 (2008)]. The mode-matching efficiency for the multi-transverse mode lasing is ~0.8 - 0.85 which means that in this case almost complete overlap of the laser and pump beams takes place. The laser beam quality factorM
    Language English
    Publishing date 2017-08-21
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1491859-6
    ISSN 1094-4087 ; 1094-4087
    ISSN (online) 1094-4087
    ISSN 1094-4087
    DOI 10.1364/OE.25.019767
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Book ; Online: Vibrationally mediated photodissociation

    Rosenwaks, Salman

    2009  

    Abstract: The first book to cover the effect of vibrational pre-excitation on molecular dynamics, both in the gas phase and on surfaces, Vibrationally Mediated Photodissociation (VMP) deals with the influence of vibrational excitation of the ground electronic ... ...

    Author's details Salman Rosenwaks
    Abstract The first book to cover the effect of vibrational pre-excitation on molecular dynamics, both in the gas phase and on surfaces, Vibrationally Mediated Photodissociation (VMP) deals with the influence of vibrational excitation of the ground electronic state of a molecule on its dissociation following excitation of this state to a higher electronic state. Aimed at students and academics, this is the first book devoted to the effect of vibrational pre-excitation on molecular dynamics in the gas phase. In particular, it deals with the influence of this excitation on the dissociation of molecules (ie: on the branching ratio between the dissociation products and its dependence on the vibrational state being excited). The effect in the gas phase has been extensively studied, both theoretically and experimentally and encompasses diverse areas of chemical physics. This monograph presents the methodology of VMP, using state-of-the-art specific examples. Overviews of earlier works are included as well, to serve as a background for current research. Wherever appropriate, original works are quoted, including the original drawings. The contents include a brief review of theoretical and experimental methods relevant to VMP and specific examples. Also included are a bibliography, author and subject index. From the description of the motivation, the approach, the execution of the experiment and the analysis of the results of the specific examples, the reader will get a comprehensive understanding of the field. The book is aimed at senior undergraduate and graduate students of chemistry and physics. It serves as an introduction to VMP for beginners and as a literature guide to those acquainted with the subject but not necessarily working on VMP
    Keywords Gas dynamics ; Molecular dynamics ; Photodissociation ; Surfaces (Physics) ; Vibration
    Language English
    Size Online-Ressource (175 p), 71 b&w, ill
    Document type Book ; Online
    Note Ebook
    ISBN 1847558178 ; 9781847558176
    Database Special collection on veterinary medicine and general parasitology

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  4. Book: Vibrationally mediated photodissociation

    Rosenwaks, Salman

    2009  

    Author's details Salman (Zamik) Rosenwaks
    Keywords Gas dynamics ; Molecular dynamics ; Photodissociation ; Surfaces (Physics) ; Vibration
    Language English
    Size XV, 204 S., 24cm
    Publisher Royal Soc. of Chemistry
    Publishing place Cambridge
    Document type Book
    ISBN 0854041559 ; 9780854041558
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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  5. Book ; Online: Vibrationally mediated photodissociation

    Rosenwaks, Salman

    2009  

    Abstract: The first book to cover the effect of vibrational pre-excitation on molecular dynamics, both in the gas phase and on surfaces, Vibrationally Mediated Photodissociation (VMP) deals with the influence of vibrational excitation of the ground electronic ... ...

    Author's details Salman Rosenwaks
    Abstract The first book to cover the effect of vibrational pre-excitation on molecular dynamics, both in the gas phase and on surfaces, Vibrationally Mediated Photodissociation (VMP) deals with the influence of vibrational excitation of the ground electronic state of a molecule on its dissociation following excitation of this state to a higher electronic state. Aimed at students and academics, this is the first book devoted to the effect of vibrational pre-excitation on molecular dynamics in the gas phase. In particular, it deals with the influence of this excitation on the dissociation of molecules (ie: on the branching ratio between the dissociation products and its dependence on the vibrational state being excited). The effect in the gas phase has been extensively studied, both theoretically and experimentally and encompasses diverse areas of chemical physics. This monograph presents the methodology of VMP, using state-of-the-art specific examples. Overviews of earlier works are included as well, to serve as a background for current research. Wherever appropriate, original works are quoted, including the original drawings. The contents include a brief review of theoretical and experimental methods relevant to VMP and specific examples. Also included are a bibliography, author and subject index. From the description of the motivation, the approach, the execution of the experiment and the analysis of the results of the specific examples, the reader will get a comprehensive understanding of the field. The book is aimed at senior undergraduate and graduate students of chemistry and physics. It serves as an introduction to VMP for beginners and as a literature guide to those acquainted with the subject but not necessarily working on VMP
    Keywords Gas dynamics ; Molecular dynamics ; Photodissociation ; Surfaces (Physics) ; Vibration
    Language English
    Size Online-Ressource (175 p), 71 b&w, ill
    Publisher Royal Society of Chemistry
    Publishing place Cambridge
    Document type Book ; Online
    Note Ebook
    ISBN 1847558178 ; 9781847558176
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  6. Book ; Online: Vibrationally mediated photodissociation

    Rosenwaks, Salman

    2009  

    Abstract: The first book to cover the effect of vibrational pre-excitation on molecular dynamics, both in the gas phase and on surfaces, Vibrationally Mediated Photodissociation (VMP) deals with the influence of vibrational excitation of the ground electronic ... ...

    Author's details Salman Rosenwaks
    Abstract The first book to cover the effect of vibrational pre-excitation on molecular dynamics, both in the gas phase and on surfaces, Vibrationally Mediated Photodissociation (VMP) deals with the influence of vibrational excitation of the ground electronic state of a molecule on its dissociation following excitation of this state to a higher electronic state. Aimed at students and academics, this is the first book devoted to the effect of vibrational pre-excitation on molecular dynamics in the gas phase. In particular, it deals with the influence of this excitation on the dissociation of molecules (ie: on the branching ratio between the dissociation products and its dependence on the vibrational state being excited). The effect in the gas phase has been extensively studied, both theoretically and experimentally and encompasses diverse areas of chemical physics. This monograph presents the methodology of VMP, using state-of-the-art specific examples. Overviews of earlier works are included as well, to serve as a background for current research. Wherever appropriate, original works are quoted, including the original drawings. The contents include a brief review of theoretical and experimental methods relevant to VMP and specific examples. Also included are a bibliography, author and subject index. From the description of the motivation, the approach, the execution of the experiment and the analysis of the results of the specific examples, the reader will get a comprehensive understanding of the field. The book is aimed at senior undergraduate and graduate students of chemistry and physics. It serves as an introduction to VMP for beginners and as a literature guide to those acquainted with the subject but not necessarily working on VMP
    Keywords Gas dynamics ; Molecular dynamics ; Photodissociation ; Surfaces (Physics) ; Vibration
    Language English
    Size Online-Ressource (175 p), 71 b&w, ill
    Publisher Royal Society of Chemistry
    Publishing place Cambridge
    Document type Book ; Online
    Note Ebook
    ISBN 1847558178 ; 9781847558176
    Database Former special subject collection: coastal and deep sea fishing

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  7. Article ; Online: Analysis of continuous wave diode pumped cesium laser with gas circulation: experimental and theoretical studies.

    Yacoby, Eyal / Auslender, Ilya / Waichman, Karol / Sadot, Oren / Barmashenko, Boris D / Rosenwaks, Salman

    Optics express

    2018  Volume 26, Issue 14, Page(s) 17814–17819

    Abstract: Analysis of the operation of flowing-gas low power DPALs is crucial for designing high power devices. In particular, the comparison between the measured and calculated temperature rise in the laser cell makes it possible to estimate the contribution of ... ...

    Abstract Analysis of the operation of flowing-gas low power DPALs is crucial for designing high power devices. In particular, the comparison between the measured and calculated temperature rise in the laser cell makes it possible to estimate the contribution of the quenching of the alkali atoms electronic states to the gas heating. Here we report on an experimental and theoretical study of continuous wave flowing-gas Cs DPAL with He and CH
    Language English
    Publishing date 2018-08-16
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1491859-6
    ISSN 1094-4087 ; 1094-4087
    ISSN (online) 1094-4087
    ISSN 1094-4087
    DOI 10.1364/OE.26.017814
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Ab initio quantum mechanical study of the O((1)D) formation in the photolysis of ozone between 300 and 330 nm.

    Grebenshchikov, Sergy Yu / Rosenwaks, Salman

    The journal of physical chemistry. A

    2010  Volume 114, Issue 36, Page(s) 9809–9819

    Abstract: Spin-allowed production of O((1)D) in the near-UV photolysis of ozone is studied using ab initio potential energy surfaces and quantum mechanics. The O((1)D) quantum yield, reconstructed from the absolute cross sections for eight initial vibrational ... ...

    Abstract Spin-allowed production of O((1)D) in the near-UV photolysis of ozone is studied using ab initio potential energy surfaces and quantum mechanics. The O((1)D) quantum yield, reconstructed from the absolute cross sections for eight initial vibrational states in the ground electronic state, is shown to agree with the measurements in a broad range of photolysis wavelengths and temperatures. Relative contributions of one- and two-quantum stretching and bending initial excitations are quantified, with the contribution of the antisymmetric stretch being dominant for lambda < 330 nm. Large scale structures in the low-resolution quantum yield are shown to reflect excitations in the high-frequency short bond stretch in the upper electronic state. Spin-forbidden contribution to the O((1)D) quantum yield at wavelengths lambda > 320 nm is estimated using ab initio energies of the triplet states and their spin-orbit couplings.
    Language English
    Publishing date 2010-09-16
    Publishing country United States
    Document type Journal Article
    ISSN 1520-5215
    ISSN (online) 1520-5215
    DOI 10.1021/jp1028849
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Vibrational overtone spectroscopy and intramolecular dynamics of C-H stretches in pyrrole.

    Portnov, Alexander / Epshtein, Michael / Rosenwaks, Salman / Bar, Ilana

    The Journal of chemical physics

    2013  Volume 138, Issue 19, Page(s) 194310

    Abstract: Room-temperature photoacoustic spectra and jet-cooled action spectra of the regions of the first and second C-H stretch overtones of pyrrole were measured with the goal of gaining new insight on the vibrational patterns and the intramolecular energy flow ...

    Abstract Room-temperature photoacoustic spectra and jet-cooled action spectra of the regions of the first and second C-H stretch overtones of pyrrole were measured with the goal of gaining new insight on the vibrational patterns and the intramolecular energy flow out of the initially excited vibrational states. The rotational cooling of the action spectra helped in observing hitherto unresolved features, assisting determination of the existing multiple bands and their positions in each region. These bands were analyzed by building vibrational Hamiltonian matrices related to a simplified joint local-mode∕normal-mode (LM∕NM) model, accounting for two types of C-H stretches and their Fermi resonances with the CCH deformation modes. The diagonalization of the LM∕NM vibrational Hamiltonians and the fitting of the eigenvalues to the band positions revealed model parameters, enabling assignment of the observed bands. The time dependences of the survival probabilities of the C-H stretches in the region of the first and second overtones, deduced from the vibrational Hamiltonian, show quantum beats due to the couplings to the deformations and decays driven by weaker interactions to the bath states. The C-H stretches, although somewhat lower in energy, show stronger coupling than the N-H stretches.
    MeSH term(s) Pyrroles/chemistry ; Quantum Theory ; Spectrum Analysis ; Vibration
    Chemical Substances Pyrroles
    Language English
    Publishing date 2013-05-21
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 3113-6
    ISSN 1089-7690 ; 0021-9606
    ISSN (online) 1089-7690
    ISSN 0021-9606
    DOI 10.1063/1.4804540
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Vibrational dynamics of pyrrole via frequency-domain spectroscopy.

    Portnov, Alexander / Epshtein, Michael / Rosenwaks, Salman / Bar, Ilana

    The Journal of chemical physics

    2012  Volume 136, Issue 2, Page(s) 24313

    Abstract: The N-H stretch overtones of pyrrole, a key constituent of biologic building blocks, were studied by room temperature photoacoustic and jet-cooled action spectroscopies to unravel their intramolecular dynamics. Contrary to "isolated" states excited with ... ...

    Abstract The N-H stretch overtones of pyrrole, a key constituent of biologic building blocks, were studied by room temperature photoacoustic and jet-cooled action spectroscopies to unravel their intramolecular dynamics. Contrary to "isolated" states excited with two and three N-H stretch quanta, the one with four quanta shows strong accidental resonances with two other states involving three quanta of N-H stretch and one quantum of C-H stretch. The inhomogeneously reduced features in the action spectra provide the means for getting insight into the intramolecular interactions and the factors controlling energy flow within pyrrole. The time dependence of the survival probability of the 4ν(1) N-H stretch, deduced from the vibrational Hamiltonian, shows an initial decay in ~0.3 ps with ensuing quantum beats from the N-H-C-H resonance and their decay with a time constant of about 5 ps as a result of weaker coupling to bath states.
    MeSH term(s) Pyrroles/chemistry ; Quantum Theory ; Spectroscopy, Near-Infrared ; Vibration
    Chemical Substances Pyrroles
    Language English
    Publishing date 2012-01-14
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 3113-6
    ISSN 1089-7690 ; 0021-9606
    ISSN (online) 1089-7690
    ISSN 0021-9606
    DOI 10.1063/1.3673614
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

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