384 Nuclear Forensic Analysis
more likely that it was produced by an acknowledged weapon state. Plutonium of
w
eapons-grade
c
omposition
i
s
u
nlikely
t
o
h
ave
d
erived
f
rom
a
ny
a
pplication
r
elated
t
o
t
he
c
ivilian
f
uel
c
ycle,
a
nd
i
t
i
s
c
onsequently
a
n
i
ndicator
o
f
m
ilitary
r
eprocessing
a
ctivities.
A
p
ower
r
eactor
u
ndergoing
i
ntermittent
o
peration
r
equired
b
y
f
requent
r
efueling
f
or
w
eapons-grade
P
u
p
roduction
w
ould
c
ertainly
b
e
n
oticed
b
y
c
ounterp-
roliferation
and intelligence assets.
Chronometry
(
the
i
nterpretation
o
f
t
he
c
oncentrations
o
f
i
ngrown
d
aughter
r
adio-
nuclides
i
n
a
s
ample
a
s
a
s
et
o
f
a
ges)
e
stablishes
t
he
d
ate
at
w
hich
a
s
ample
o
f
m
ixed
U
o
r
P
u
i
sotopes
w
as
l
ast
p
uried.
W
ithin
a
s
et
o
f
a
ges
me
asured
f
or
a
g
iven
s
ample,
a
n
a
ge
t
hat
a
ppea ...