Available data on critical energies for ffostained ignition of black alpha-cellulose paper in the absence of forced convective heat losses are correlated against exposure time on a nondimenslonal basis. Investigations cover a range of irradiance from 2 to 25 cal/cm^sec, exposure time from 0.1 to ^ seconds, and paper thickness from 2 to 30 mils. Ignition energies for papers of two nominal densit...

mA. The device was deposited onto a polished glass substrate and sandwiched with a second polished piece of glass for prot~ection. At the peak in wavelength response (2 mils), an rnls output of about 25 mV was achieved. The response vanished into widebmd tape noise for a wavelength below 50 pin. A maximum rms signal-to-rms tape noise of about 66 dB wa.s observed. An applied bias field of about ...