Ionization and dissociation of acetonitrile with intense laser pulses

ORAL

Abstract

We present an experimental study of laser induced ionization and dissociation of acetonitrile molecule (CH$_{\mathrm{3}}$CN) by using a reflectron type time-of-flight (TOF) mass spectrometer. In these experiments an amplified ultrafast Ti:sapphire laser system emitting 50fs pulses of radiation centered at 800nm wavelength and having a 1kHz repetition rate was used. At the intensity of $3x10^{14}W/cm^{2}$ we observed singly charged ions CH$_{\mathrm{n}}$CN$^{\mathrm{+}}$ (n$=$0-3), CN$^{\mathrm{+}}$, CH$_{\mathrm{2}}^{\mathrm{+}}$, C$^{\mathrm{+}}$, and H$^{\mathrm{+}}$ as well as fragments with higher charge states C$^{\mathrm{2+}}$, C$^{\mathrm{3+}}$,CH$_{\mathrm{2}}^{\mathrm{2+}}$, and CH$_{\mathrm{2}}^{\mathrm{3+}}$ , when using both linear or circular polarizations of the driving field. We also present and analyze laser intensity dependences for the yields of the parent ion and other fragments ranging from $4.4x10^{13}W/cm^{2}$to $3.3x10^{14}W/cm^{2}.$ Finally, we investigated angular dependences of acetonitrile fragmentation by changing the polarization direction of the laser beam with respect to the TOF axis and concluded that yields of heavy fragments do not show strong angular dependences, while light fragments, especially with higher charge states, demonstrate a strong anisotropy.

–

Authors

  • Y. Boran

    Texas A&M University

  • Harry A. Atwater

    Institute for Advanced Physics and Mathematics, Zhejiang University of Technology, Baylor University, baylor university, Lanzhou Jiaotong University, Lanzhou University, Trinity University, University of New Hampshire, Los Alamos National Lab, Southwest Research Institute, University of Texas San Antonio, Texas A&M University, Department of Physics, Texas State University, San Marcos, TX78666, None, Southern Illinois University, Carbondale, Illinois 62901, Beijing Computational Science Research Center, Beijing 100094, P.R. China, The State Key Laboratory of Quantum Optics and Quantum Optics Devices, China, COMSATS Institute of Information Technology, Islamabad, Pakistan, Lamar University, NIST, NIST Physical Measurement Laboratory,Thermodynamic Metrology Laboratory, Rice University, University of Texas at Rio Grande Valley, University of Texas at Dallas, Texas Tech University, Department of Physics and Astronomy, Texas A\&M University, Russian Quantum Center, Physics Department, International Laser Center, M.V. Lomonosov Moscow State University, Baylor University, Texas A&M University, Princeton University, Baylor University, Texas A&M University, Florida State University, Univ of Texas, Dallas, University of Texas Rio Grande Valley, University of Houston, Physics and Astronomy, Material Science and Eng,Texas A\&M University. WPI-Advanced Institute for Materials Research, Tohoku University, Sendai, Japan, Physics and Astronomy, Texas A\&M University, Material Science and Eng., Texas A\&M University, Texas Christian University, Utaca College, University of Texas at Arlington, Angelo State University Physics & Geosciences Department, Texas State University, Universidade Federal de Viçosa, Department of Physics, Lamar University, Texas Lutheran University, University of Oklahoma, Texas A&M University, Baylor University, Princeton University, Texas A&M University, Baylor University, Institute for Quantum Science and Engineering (IQSE) and Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843-4242, Texas A\&M University, Florida A&M University, Texas A&M University, Princeton University, Baylor University, Department of Physics and Astronomy, Texas A&M University, College Station, TX, Texas A&M University and Baylor University, Abilene Christian University, Michigan State University, Argonne National Laboratory, Southern Methodist University, University of Maryland, Baltimore County, Baltimore, MD 21250, Institute for Quantum Science and Engineering, Texas A&M University 4242 TAMU College Station, Texas 77843-4242, The Institute for Quantum Science and Engineering, Texas A&M University, Southern Nazarene University, Texas A&M University, Landau Institute for Theoretical Physics, University of Cologne, Department of Physics, The University of Texas at Dallas, 800 W. Campbell Rd., Richardson, Texas 75080, USA, Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, USA, $^{1}$Department of Physics and Astronomy, Texas A\&M University, $^{1}$Department of Physics and Astronomy, Texas A\&M University, $^{2}$WPI-AIMR, Tohoku University, Japan, Department of Physics, Austin College, AMRIS/NHMFL, University of Florida, University of Texas Southwestern Medical Center, Mississippi State University, The Methodist Hospital System, Biophotonic Solutions, Inc., University of Texas, Austin, California Insititute of Technology

  • Harry A. Atwater

    Institute for Advanced Physics and Mathematics, Zhejiang University of Technology, Baylor University, baylor university, Lanzhou Jiaotong University, Lanzhou University, Trinity University, University of New Hampshire, Los Alamos National Lab, Southwest Research Institute, University of Texas San Antonio, Texas A&M University, Department of Physics, Texas State University, San Marcos, TX78666, None, Southern Illinois University, Carbondale, Illinois 62901, Beijing Computational Science Research Center, Beijing 100094, P.R. China, The State Key Laboratory of Quantum Optics and Quantum Optics Devices, China, COMSATS Institute of Information Technology, Islamabad, Pakistan, Lamar University, NIST, NIST Physical Measurement Laboratory,Thermodynamic Metrology Laboratory, Rice University, University of Texas at Rio Grande Valley, University of Texas at Dallas, Texas Tech University, Department of Physics and Astronomy, Texas A\&M University, Russian Quantum Center, Physics Department, International Laser Center, M.V. Lomonosov Moscow State University, Baylor University, Texas A&M University, Princeton University, Baylor University, Texas A&M University, Florida State University, Univ of Texas, Dallas, University of Texas Rio Grande Valley, University of Houston, Physics and Astronomy, Material Science and Eng,Texas A\&M University. WPI-Advanced Institute for Materials Research, Tohoku University, Sendai, Japan, Physics and Astronomy, Texas A\&M University, Material Science and Eng., Texas A\&M University, Texas Christian University, Utaca College, University of Texas at Arlington, Angelo State University Physics & Geosciences Department, Texas State University, Universidade Federal de Viçosa, Department of Physics, Lamar University, Texas Lutheran University, University of Oklahoma, Texas A&M University, Baylor University, Princeton University, Texas A&M University, Baylor University, Institute for Quantum Science and Engineering (IQSE) and Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843-4242, Texas A\&M University, Florida A&M University, Texas A&M University, Princeton University, Baylor University, Department of Physics and Astronomy, Texas A&M University, College Station, TX, Texas A&M University and Baylor University, Abilene Christian University, Michigan State University, Argonne National Laboratory, Southern Methodist University, University of Maryland, Baltimore County, Baltimore, MD 21250, Institute for Quantum Science and Engineering, Texas A&M University 4242 TAMU College Station, Texas 77843-4242, The Institute for Quantum Science and Engineering, Texas A&M University, Southern Nazarene University, Texas A&M University, Landau Institute for Theoretical Physics, University of Cologne, Department of Physics, The University of Texas at Dallas, 800 W. Campbell Rd., Richardson, Texas 75080, USA, Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, USA, $^{1}$Department of Physics and Astronomy, Texas A\&M University, $^{1}$Department of Physics and Astronomy, Texas A\&M University, $^{2}$WPI-AIMR, Tohoku University, Japan, Department of Physics, Austin College, AMRIS/NHMFL, University of Florida, University of Texas Southwestern Medical Center, Mississippi State University, The Methodist Hospital System, Biophotonic Solutions, Inc., University of Texas, Austin, California Insititute of Technology

  • Harry A. Atwater

    Institute for Advanced Physics and Mathematics, Zhejiang University of Technology, Baylor University, baylor university, Lanzhou Jiaotong University, Lanzhou University, Trinity University, University of New Hampshire, Los Alamos National Lab, Southwest Research Institute, University of Texas San Antonio, Texas A&M University, Department of Physics, Texas State University, San Marcos, TX78666, None, Southern Illinois University, Carbondale, Illinois 62901, Beijing Computational Science Research Center, Beijing 100094, P.R. China, The State Key Laboratory of Quantum Optics and Quantum Optics Devices, China, COMSATS Institute of Information Technology, Islamabad, Pakistan, Lamar University, NIST, NIST Physical Measurement Laboratory,Thermodynamic Metrology Laboratory, Rice University, University of Texas at Rio Grande Valley, University of Texas at Dallas, Texas Tech University, Department of Physics and Astronomy, Texas A\&M University, Russian Quantum Center, Physics Department, International Laser Center, M.V. Lomonosov Moscow State University, Baylor University, Texas A&M University, Princeton University, Baylor University, Texas A&M University, Florida State University, Univ of Texas, Dallas, University of Texas Rio Grande Valley, University of Houston, Physics and Astronomy, Material Science and Eng,Texas A\&M University. WPI-Advanced Institute for Materials Research, Tohoku University, Sendai, Japan, Physics and Astronomy, Texas A\&M University, Material Science and Eng., Texas A\&M University, Texas Christian University, Utaca College, University of Texas at Arlington, Angelo State University Physics & Geosciences Department, Texas State University, Universidade Federal de Viçosa, Department of Physics, Lamar University, Texas Lutheran University, University of Oklahoma, Texas A&M University, Baylor University, Princeton University, Texas A&M University, Baylor University, Institute for Quantum Science and Engineering (IQSE) and Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843-4242, Texas A\&M University, Florida A&M University, Texas A&M University, Princeton University, Baylor University, Department of Physics and Astronomy, Texas A&M University, College Station, TX, Texas A&M University and Baylor University, Abilene Christian University, Michigan State University, Argonne National Laboratory, Southern Methodist University, University of Maryland, Baltimore County, Baltimore, MD 21250, Institute for Quantum Science and Engineering, Texas A&M University 4242 TAMU College Station, Texas 77843-4242, The Institute for Quantum Science and Engineering, Texas A&M University, Southern Nazarene University, Texas A&M University, Landau Institute for Theoretical Physics, University of Cologne, Department of Physics, The University of Texas at Dallas, 800 W. Campbell Rd., Richardson, Texas 75080, USA, Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, USA, $^{1}$Department of Physics and Astronomy, Texas A\&M University, $^{1}$Department of Physics and Astronomy, Texas A\&M University, $^{2}$WPI-AIMR, Tohoku University, Japan, Department of Physics, Austin College, AMRIS/NHMFL, University of Florida, University of Texas Southwestern Medical Center, Mississippi State University, The Methodist Hospital System, Biophotonic Solutions, Inc., University of Texas, Austin, California Insititute of Technology

  • Harry A. Atwater

    Institute for Advanced Physics and Mathematics, Zhejiang University of Technology, Baylor University, baylor university, Lanzhou Jiaotong University, Lanzhou University, Trinity University, University of New Hampshire, Los Alamos National Lab, Southwest Research Institute, University of Texas San Antonio, Texas A&M University, Department of Physics, Texas State University, San Marcos, TX78666, None, Southern Illinois University, Carbondale, Illinois 62901, Beijing Computational Science Research Center, Beijing 100094, P.R. China, The State Key Laboratory of Quantum Optics and Quantum Optics Devices, China, COMSATS Institute of Information Technology, Islamabad, Pakistan, Lamar University, NIST, NIST Physical Measurement Laboratory,Thermodynamic Metrology Laboratory, Rice University, University of Texas at Rio Grande Valley, University of Texas at Dallas, Texas Tech University, Department of Physics and Astronomy, Texas A\&M University, Russian Quantum Center, Physics Department, International Laser Center, M.V. Lomonosov Moscow State University, Baylor University, Texas A&M University, Princeton University, Baylor University, Texas A&M University, Florida State University, Univ of Texas, Dallas, University of Texas Rio Grande Valley, University of Houston, Physics and Astronomy, Material Science and Eng,Texas A\&M University. WPI-Advanced Institute for Materials Research, Tohoku University, Sendai, Japan, Physics and Astronomy, Texas A\&M University, Material Science and Eng., Texas A\&M University, Texas Christian University, Utaca College, University of Texas at Arlington, Angelo State University Physics & Geosciences Department, Texas State University, Universidade Federal de Viçosa, Department of Physics, Lamar University, Texas Lutheran University, University of Oklahoma, Texas A&M University, Baylor University, Princeton University, Texas A&M University, Baylor University, Institute for Quantum Science and Engineering (IQSE) and Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843-4242, Texas A\&M University, Florida A&M University, Texas A&M University, Princeton University, Baylor University, Department of Physics and Astronomy, Texas A&M University, College Station, TX, Texas A&M University and Baylor University, Abilene Christian University, Michigan State University, Argonne National Laboratory, Southern Methodist University, University of Maryland, Baltimore County, Baltimore, MD 21250, Institute for Quantum Science and Engineering, Texas A&M University 4242 TAMU College Station, Texas 77843-4242, The Institute for Quantum Science and Engineering, Texas A&M University, Southern Nazarene University, Texas A&M University, Landau Institute for Theoretical Physics, University of Cologne, Department of Physics, The University of Texas at Dallas, 800 W. Campbell Rd., Richardson, Texas 75080, USA, Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, USA, $^{1}$Department of Physics and Astronomy, Texas A\&M University, $^{1}$Department of Physics and Astronomy, Texas A\&M University, $^{2}$WPI-AIMR, Tohoku University, Japan, Department of Physics, Austin College, AMRIS/NHMFL, University of Florida, University of Texas Southwestern Medical Center, Mississippi State University, The Methodist Hospital System, Biophotonic Solutions, Inc., University of Texas, Austin, California Insititute of Technology