28 16         # first data record, number of data records
Reference: JPL Publication 94-26
           Chemical Kinetics and Photochemical Data for Use in Stratospheric
           Modeling
           Evaluation Number 11
           December 15, 1994
           page 156 ff.

CH3CF2CL (HCFC-142b) + hv -> Products

"The preferred absorption cross sections at 298 K, listed in Table 47, are the 
mean of the values reported by Gillotay and Simon [570] and Orlando et al.
[1212] over the wavelength range where the agreement is bettern than a factor
of two.  At lower wavelengths the agreement is much better;  e.g., at 200 nm
the agreement is within 5%.  Green and Wayne [594] and Hubrich and Stuhl [712]
have also measured the cross sections in the ranges 185-200 nm and 160-230 nm,
respectively.  The results of Green and Wayne are very different from the
recommended value and were not considered for this evaluation.  The results of
Hubrich and Stuhl (reported at 5 nm intervals) are in reasonable agreement
with the more recent studies of Gillotay and Simon and of Orlando et al.  The
temperature dependence of the cross sections has been measured by Orlando et
al. and by Gillotay and Simon;  it has not been included in this evaluation."

Table 47.  Absorption Cross Sections of Hydrochlorofluoroethanes at 298K
----------------------------------------------------------------------------
lambda (nm)		1E20 sigma (cm^2) at 298K
----------------------------------------------------------------------------
190			0.94
192			0.66
194			0.46
196			0.31
198			0.21
200			0.14
202			0.09
204			0.061
206			0.039
208			0.026
210			0.017
212			0.010
214			0.007
216			0.004
218			0.003
220			0.002