INDEX 



640 



M 



Magnesium, in biological tracer studies, 

 522-523, 542, 547 



isotopes of, 15, 190 

 Magnetic focusing, in betatrons, 492 



in cyclotrons, 481 

 Magnetic moment, of isotopes, 12-13, 22-27 

 Magnetic resonance accelerator, 476 

 Manganese, in biological tracer studies, 

 527, 543 



isotopes of, 16, 195-196, 527 



in radiotherapy, 540, 550 

 Mass defect, 7 

 Mass scanning, 297 

 Mass spectrograph, 183, 279-303 



of Aston, 279-280 



of Bainbridge- Jordan, 285-287 



of Dempster, 280-281, 284-285 



double focusing, 282-288 



of Mattauch, 282-284 



60-deg (Nier) type, 281-282 



trochoidal trajectory type, 287-288 

 Mass spectrometer analysis, of carbon 

 isotopes, 300-301 



of hydrogen isotopes, 299-300 



of nitrogen isotopes, 301-302 



of oxygen isotopes, 302 

 Mass spectrometer scanning and recording, 



297-298 

 Mass unit, 8 

 Mean free path, 132 

 Mean life, 150 



for alpha emission, 94 



for neutron capture, 131 



of quantum states, 122 

 Mean range of alpha particles, 184 

 Medical supervision of personnel, 452-453 

 Medical treatment of radiation damage, 



451, 453 

 Mercury, in biological tracer studies, 533 

 544, 549 



isotopes of, 21, 244-245 

 Metabolic processes in dosimetry, 431-434 

 Metabolic tracing, 508-509 

 Metabolism, in dosimetry, 408, 431 

 Metabolizing function, 400 

 Metastable levels of filling gases, 312 

 Micronutrient elements, 508-509, 524-529 

 Micropipette, 273-274 



Mineral metabolites, 520 

 Moderator, 131 



Molybdenum, in biological tracer studies, 

 529, 543 



isotopes of, 17, 212-213, 529 

 Monitoring, of personnel, 451 



of radiations, 464, 468 

 Multiple scattering, of beta particles, 373 



of gamma rays, 35 

 Multiple tracer applications, 401-402, 508 

 Multivibrator quenching circuit, 328 



N 



Natural radioactive series, 177-183 

 Negatron, 49 



Neher-Harper quenching circuit, 328 

 Neher-Pickering quenching circuit, 329 

 Neptunium series, 177, 179, 182 

 Neutrino, 63-64, 67, 155, 163 

 Neutrons, 121-147 



cross sections for, 121, 125-147 

 of boron, 134, 142, 316, 462 

 of cadmium, 134, 147, 462 

 of carbon, 143-144 

 of hydrogen, 140-141 

 of nitrogen, 145 

 of oxygen, 146 



diffusion of, 121, 130-135 



emission of, 123, 129-130 



multiple emission of, 129-130 



properties of, 121-122 



shielding materials for, 462 



standardization of, 378-379 

 Neutron activation, 184 



cross sections for, 136-139 

 Neutron capture, 149-151 

 Neutron processes, 122-123 

 Nickel, in biological tracer studies, 531, 547 



isotopes of, 16, 197-198 

 Nitrogen, in biological tracer studies, 517, 

 542 



isotopes of, 15, 188 

 Normal distribution curve, 319 

 Nonmetabolic tracing, 509-510 

 Nuclear g factor, 13 

 Nuclear forces, 3-8, 148 

 Nuclear magneton, 12 

 Nuclear radius, 94, 125, 128 

 Nuclei, properties of, 3-31 



