Research on CR-39 plastic detectors for cosmic ray astrophysicsThe sensitivity of CR-39 is a strong function of catalyst concentration during its polymerization. Normal CR-39 will detect vertically incident particles with Z/beta as low as 10. An extrapolation suggests that CR-39 with a high catalyst concentration and sensitivity to within approximate 5% can be made by a suitable choice of cure cycle and mold material. CR-39 is less sensitive than Lexan to thermal annealing of tracks but cannot tolerate background radiation levels greater than a few Mrad.
Document ID
19810028129
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Price, P. B. (California Univ. Berkeley, CA, United States)
Shirk, E. K. (California Univ. Berkeley, CA, United States)
Kinoshita, K. (California Univ. Berkeley, CA, United States)
Tarle, G. (California, University Berkeley, Calif., United States)