Radium 223 Photon Energy

Q-value 43, 167, 272, 273 quadrupole moment 7 quality assurance 378 quantum efficiency 182, 373 quantum mechanical description 72 quantum number 218 quantum number change 122 quartz 15, 171 quench gas 169 quenching 174 quenching mechanism 179 quenching processes 177 Quimby system 343

radial dose function 346, 348, 354 radial electric field 23 radial symmetry 378 radiation action 214 radiation damage 220, 226 radiation dose 380 radiation dosimetry 108 radiation effect 214-215, 296 radiation exposure 411 radiation hardness 225 radiation hormesis 421 radiation length 28 radiation product 209-210 radiation quality 329, 333 radiation track 209 radiation tree 223 radiation weighting factor 412 radiation worker 381, 417, 424 radiation-less transition 175 radiative capture 123, 126 radiative mass stopping power 82 ! width 125 2 07

radical f( rmation 226 radical-radical interaction 215 i/e fallout 413, 414 :uency field 397 radiofrequency ohmic heating 354 radiographic film 371, 373 radioisotope production 275, 276 radiolysis of water 215 radiolytic hydrogen 222 radiopharmaceutical

365, 381, 393, 394 radiotherapy 45 radium-substitute source 343 radon dose 415 Ramsauer minimum 155 range 49

range energy relation 319 range spreading 325 range straggling 54 rate constant 209-210, 382-384 Rayleigh 291

Rayleigh scatter 95, 100, 191 re-emitted electron 223 reaction probability 211

radiative radical radioacti radiofrec reaction rate constant 210 reaction time 213 reactions of ions 207-208 real-time detector 374-378 recirculation 387 recoil electron 85 recoil momentum 99 recoil proton 166 recombination 156, 159 recombination probability 158 recommended dose limit 422 recovery coefficient 393 recovery time 404, 406 red bone marrow 412 reduced electric field 155, 164 reduced field strength 165 reduced mass 79, 123, 218 reference air kerma rate 347 reference dose rate 351 reference field 23 reflector 171 refractive index 319 region of interest (ROI) 381 relative biological effectiveness (RI

322, 411 relative sensitivity 398 relative speed 371 relativistic particle 20, 212 repair mechanism 420 repairable damage 418 residual gas molecule 197 residual ion 166 residual nucleus 272 resist 193 resonance 17, 281 resonance condition 18, 20 resonance escape probability 138 resonance process 212 resonance reaction 123 resonant cavity 22 resonant frequency 397 response function 360 rest mass energy 6, 17 reusable imaging medium 342 reversible flow 392-393 reversible transfer 383 rf pick-up coil 404 rf waveguide 306 ringworm of the scalp 417

risk factor 416

Roentgen 351

root mean square 38

rotating frame of reference 400

rotational mode 212

rotational state 175

Rutherford scatter 79

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