Laser irradiation of parylene disks with a 1.06 micron laser

Parylene disks supported on glass stalks were irradiated with 1.06 mu m wavelength laser light pulses focused to flux intensities in the range from 10 to the 15th power to 10 to the 17th power W/sq cm. According to photodiode measurements the fraction of laser light absorbed, 25 to 50 percent, increased slightly as the laser intensity was increased. However, box calorimeter measurements implied that the fraction absorbed was approximately 30 percent and insensitive to irradiation intensity. Some X-ray spectra are discussed.