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oo ae elaR arial ade
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te
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7
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oteRaeeselere
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tone eee
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a Me tS ar ti ne eee
eere a ee ee
se
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fe we
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Although most of
a
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oe fea alee
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-
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i
= aes
ioe
fw.
.
“~
aw
me
-
Py
sae Mate
ae:
‘products, such ass 1370s
(30 years),.>?55> k2. 7 years),oe
vation products such as 54Mn (303 days),and88zn (2455 aya)
bla
eee,
sn
cae
wwe
ate
other isotopes such as 82C0, 1°3Meh, 2°7Bi, 1623u, and 3*8ny
are only rarely identified in environmental samples, particus=
larly with such prominence as that displayed, for instance,
by the 7 intense lines of ?°?™Rh identifiable in Figure 4.
The appearance of 12 distinct lines of 175Sb in the soil
semple spectrum in Fig. 3 is also quite unusual.
?/5*Eu
(12.7 years), an apparent activation product, has been found
previously
(5)
in Trinitite,
an artifical mineral produced
in the first nuclear explosion in New Mexico in 1945.
2° Rh
(3 years) and 2°#Rh (206 days) are also activation products:
1°2Rh is known to have beenusedas a tracer material in
several weapons tests. | Allbut.‘he least intense gamma-ray
“
wenn
‘eee oe
aaa ete ue er
res
lines from ‘4° 20Rh can be identifeein Fig.ay“the first|
time as faras“we knowthat this“recently discovered
1 isomer32 ms
a
vn MERZ aeeeerras
a gage aT
ie. Sr
TO
“5. (7, fe
has been identified in-an environmental sample (6).
Soba tt
SiRnto le oe ea ty a SaeetPenge
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tee
oa
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seaee TDM Tanne,
oe
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oo
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MROPF otae
cence to cations hep acgeT
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n
amene kt
settling ee
:
we
—_——a she
ree
:
aie tipi
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tea
ee ab em
aes
:
.
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o
ry
x
gf.
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taean
dir
meme thieHe ne
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DP pttwer 7
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oe
oe nate
.
ae gh ee te.
.
7 Se as
ee Pe
ree
mR
eR
Siege
tte,
i.
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= oe
the isotopes identified‘are ‘familiar long-lived fission
-
eae ©
f
at oP ae en
133Ba in a soil sample from Nan Island.
at
oe
oa
ae
=: