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   PR # 12190
    Utilizing the broad bandpass,large effective area,and high spectral
    resolution of the{\it ASCA\/}detectors,we propose to observe a small
    sample of nonmagnetic CVs to determine the nature of their X-ray spec
    tra. Assuming,as is indicated by recent measurements,that their spect
    ra are due to a thermal plasma,we intend to measure the strengths,wid
    ths,and energies of the various emission lines, and thereby determine
    the character of the X-ray emitting plasma,including possible distrib
    utions of emission measure over temperature and possible relative ele
    mental abundance depletions due to nuclear processing in the secondar
    y.We also intend to investigate the importance of photoionization to
    the X-ray spectra via measurements of the recombination line emission
   from low-ionization stages of
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