A pulsed x‐ray method for measuring the decay time of luminescence of organic scintillators is described. The design of the x‐ray tube and the arrangement of the accompanying electrical apparatus is outlined. Particular care was taken to minimize the time dispersion effect of the apparatus and to increase the pulse size of the scintillation in order that statistical fluctuations would be minimized. The luminescence decay curves for anthracene, stilbene, and diphenylacetylene scintillators are shown.

1.
Peter Pringsheim, Fluorescence and Phosphorescence (Interscience Publishers, Inc., New York, 1949), Chap. 4, Part D.
2.
H.
Kallman
,
Phys. Rev.
79
,
857
(
1950
);
H.
Kallman
,
81
,
853
(
1951
).,
Phys. Rev.
3.
W. L. Buck and R. K. Swank (to be published).
4.
G. B.
Collins
,
Phys. Rev.
74
,
1542
(
1948
).
5.
G. G.
Kelley
and
M.
Goodrich
,
Phys. Rev.
77
,
138
(
1950
).
6.
Hofstadter
,
Liebson
, and
Elliot
,
Phys. Rev.
78
,
81
(
1950
).
7.
R. F.
Post
and
N. S.
Shiren
,
Phys. Rev.
78
,
80
(
1950
).
8.
Martinson
,
Isaacs
,
Brown
, and
Ruderman
,
Phys. Rev.
79
,
178
(
1950
).
9.
Liebson
,
Bishop
, and
Elliot
,
Phys. Rev.
80
,
907
(
1950
).
10.
Arne
Lundby
,
Phys. Rev.
80
,
477
(
1950
).
11.
R.
Garwin
,
Rev. Sci. Instr.
21
,
903
(
1950
).
12.
G. A. Morton, Electronic Devices for Nuclear Physics, Quarterly Reports 1–7 (Contract W‐7405‐eng‐26), Radio Corporation of America.
13.
Frank S.
Tomkins
and
Mark
Fred
,
J. Opt. Soc. Am.
41
,
641
3
(
1951
).
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