135 



inactivation of dry films on 

 solid surfaces, 110, 1ZZ 



Cavitation 



significance in supersonic ra- 

 diation, 87 



Cell 



excitation of heavy metal com- 

 plex, 82 



Cell division 



ultraviolet inactivation re- 

 versed by light, 113 



Cerenkov radiation 



role in efficiency of scintilla- 

 tion counter, 89 



Cerenkov light emission 



recombination radiation in wa- 

 ter, 16 



Chemical effects 



induced by radiation in bio- 

 logical material, 102 



Chemical structure 



effects on stopping power, 1 1- 



Chemiluminescence 



induction of electronic excita- 

 tion, 1 6 



Chemistry 



irradiated water, 57 



Chlorophyll 



interaction with other pigments 

 in photosynthesis, 108, 109 

 sensitization of photo- oxida- 

 tion of amines, 81 



Cloud chamber 



photographic measurement of 

 separation of ion pairs, 52 



Columnar recombination 



electron with positive ion, 70 

 Jaffe theory, 70 



Complex molecule 



vibrational and electronic 

 states of potential surfaces, 96 



Conductivity 



induced in liquid helium, 

 argon, hydrogen and nitrogen 

 by ionizing radiation, 55 



Contact potential, 9 



Cosmic rays 



use of data to obtain average 

 volts per primary ionization, 47 



Cotton 



blue color induced by gamma 

 rays, 46 



Coulomb field 



influence on spatial distribution 

 of electron in water, 53, 54 



Coulombs' law, 27 



Cross section 



electron volts, 8 



Cyclotron 



multipli-charged ion beams, 20 

 synchro- or FM, 1 



Cystine 



ionization and breakdown prod- 

 ucts of dry preparation, 42 



Cytosine 



ratio to guanine in DNA, 120 



de Broglie wavelength, 26 

 electrons in water, 54 



Delta rays 



energy distribution, 48 

 energy range, 52, 55 

 fluctuation in ionization along 

 tracks, 48 

 formation of OH radicals, 57 



Desoxyribose nucleic acid 



effects of radiation on nuclear 

 turnover, 113 



effects of varying dose rates 

 and total dose rates and total 

 doses of U V and X rays, 116, 117 

 measurement of monolayer, 

 119 



ratio to adenine and thymine to 

 guanine and cytosine, 120 

 ratio of adenine to thymine, 

 120 



ratio of guanine to cytosine, 

 120 



resonative energy transfer, 87 

 synthesis inactivated by irradi- 

 ation, 1 1 3 



Diatomic molecule 



internal conversion time, 77 



Dielectric absorption 

 proteins, 7 3 



Dielectric breakdown, 24 



Dielectric constant 

 proteins, 73 



Dielectric properties 

 ammonia, 29, 34 

 ice 43 

 water, 26, 27, 28, 29, 34 



Dielectric relaxation time 

 electron attachment, 38 

 in water, 71 



Diphenylamine 



loss of electron in hydrocar- 

 bon vs. hydroxylic solvent, 75 



Dipolar moment 



electron energy loss through 

 rotation of dipoles, 26 

 molecular excitation by slow 

 electrons, 23, 24, 26 



Dipolar properties 



