INDEX
'
Absorbing:
Aœelerators of ions:
'
'
—
equivalent power, 269, 287
—
linear multiple, 292 -
—
screens for a, B, 7 rays, 390, 289
—
magnetic resonance, 293
'
'
—
screens for x-rays, 214
'
——
tubes, 303
'
'
'
'
Absorption:
Accidental counts, 428 '
—
by atoms, for electrons, 140
Actinium:
—
laWs, 200, 279, 264, 334, 139
—
active deposits, 249
-—
limit, critical, X-rays, 202 ' '
.
—
series, chart, 242
.
_
'
'
-—of alpha rays, 264, 269
—_series, table, 471
'
—-—
exper., 283, 286
_
'
_
'-— series, weights, 230
-
'
'
'
-——
of beta rays, 278
’
Active deposits: 247
'
'
'
—-—
exper.,
289
——
exper.,
254
'
"
_
'
'
—'—— table, 468
Activity:
.
'
—
of cosmic rays, 344
'
-—
curves, 243,248»
.
——-—
exper.,
352
_
'
——
exper.,
254
'
‘
"
-—
of electrons, 139
'
'
—
of alpha particles, 396
_
_
—
of gamma rays, 278
'
—
radio—, 241
''
'
_
'
"‘
——
exper.,
290
Adsorption process,
362
,
'
_
_
——
table, 469
,
-
Air:
_
_
'
'
.
'
—
of gases,
362
——
atmosphere law, 10
'
»
——
of neutrons;
'
_
-—.— density of, law, 10
'
‘
—-—-—
fast, 318
—
equivalent of, 269
'
_
'
'
——7 slow, 334
——
viScosity of, 6
_
_
_
'
-—
of X-rays; 199
.
_
__
Alpha particle:
'
.
'
——
critical limit, 202
'
_'
—
activity, 396 '
_
'
'
.
——
exper., 214
_
_
-—air equivalent _for,
269»
_
'
'
"
___—
process,
201
‘
_
’
'
as the helium nucleus, 261
—
__
table, 469
'
.
-—
capture by nucleus, 309
curve, 264, 312
_
_
.
-—
charge of, 260, 7
’
_
-
_
.
,
Absorption “c0eicients:
_
_
—-—
counter tubes for, 424
_
'
'
—+- denition, 200
_
.
——
counting number Of, 260
'
.-—— linear, mass, 200
-
_
__—- drop traCks of, 439, 264, 281_
'
_
'— of various rays, see absorption.
-—'-— E/M for, 262
‘
'
_
_
'
——
tables of, 468, 469
.
=
__
_
——.energy of, 267
‘
"
_
‘
_
,.
'
Abundance of isotopes:
228
_
‘
"—
expansion chamber
434
_'
_
—
'
—"
'
'
..
_
_—mass of, 262
.
-
._Accelerating potential:
_—
_
Ï
'
nature Of,
,
'.
'
'
_
-
VS. velocity of electrons, 467
_
'
-—
number emitted‘, 241,261 .
_
,
.
,
—
‘
473
'
'
'