On the frequency distribution of ice grain sizes
Abstract
The consequences of a sizeindependent probability per unit time for the destruction of an ice grain are examined. The resulting steadystate size distribution is found to be of the form n(r)OC exp  Er. The modification of such a distribution near hot stars is also considered. The original distribution is altered only to the extent of a timedependent proportionality factor, exp  EOCt, which has no effect on a normalized extinction curve. Normalized extinction curves are computed for size distributions of ice grains of the form n(r) exp  Er. The best fit with the observed curve is obtained for a mean particle size r = IL The ultraviolet extinction is higher than for van de Hulst's curve no. 15, but yet somewhat lower than the mean observations.
 Publication:

Monthly Notices of the Royal Astronomical Society
 Pub Date:
 1966
 DOI:
 10.1093/mnras/132.1.137
 Bibcode:
 1966MNRAS.132..137W