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    STP1038

    Laser Fluorescence Spectroscopy of Zinc Neutrals Originating from Laser-Irradiated and Ion-Bombarded Zinc Sulfide and Zinc Surfaces

    Published: 0


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    Abstract

    Time-of-flight (TOF) measurements, employing high-resolution laser-induced fluorescence spectroscopy (LFS) as a probe, have been used to measure the yield and velocity distribution of Zn atoms ejected from a ZnS single crystal under irradiation by 308 nm photons. By comparison with the known io: sputtering yield for pure zinc, the absolute yield was determined to be 109 atoms/pulse at a laser fluence of 30 mJ/cm2. The velocity distribution of the Zn atoms could be fitted by a Maxwell-Boltzmann distribution, having a characteristic temperature of 2360 K. In addition, Doppler-shift techniques have been combined with TOF measurements in order to separate prompt from delayed emission of ablated atoms, as well as to probe possible molecular or cluster fragmentation. The results obtained suggest the possibility of molecular or cluster emission from ZnS.

    Keywords:

    delayed emission, laser damage, laser fluorescence spectroscopy, Maxwell-Boltzmann distribution, molecular or cluster fragmentation, time of flight, zinc sulfide


    Author Information:

    Arlinghaus, HF
    Argonne National Laboratory, Argonne, IL

    Calaway, WF
    Argonne National Laboratory, Argonne, IL

    Young, CE
    Argonne National Laboratory, Argonne, IL

    Pellin, MJ
    Argonne National Laboratory, Argonne, IL

    Gruen, DM
    Argonne National Laboratory, Argonne, IL

    Chase, LL
    Argonne National Laboratory, Argonne, IL


    Committee/Subcommittee: F01.19

    DOI: 10.1520/STP24426S