qs
0021620
TABLE 10
Summary of G, and ba, Values for Some Test Shots
Shot
a,
JANGLE "s"
_
CASTLE
CASTLE
CASTLE
CASTLE
REDWING Navajo
REDWING Tewa
PLUMBBOB Coulomb C
4.5
1.45
0.32
Bravo
Romeo
Koon
Union
REDWING Zuni
REDWING Flathead
ba,
1.45
JANGLE "u"
0.32
1.0
-1.0
1.40
1.0
1.0
.
0.54
0.65
1.40
0.81
'
.
a
0.15_,
.
—DELETED.
‘
1.0
1.30
0.66
1.30
COMPUTATION OF THE TERRAIN FACTOR FROM
FRACTION-OF-DEVICE DATA
'
The computation of q was carried out by use of Eq. 25.
The values
of Dep(2)4n(2) and D, were taken from Reference 2 for U235 fission
products which were
o used to determine the rp,
values in Section 4.3.
The values of Dergcgt (1) are given in Table 11. “The rjcj values were
taken from Table
dnd the text of Section 4.2. The calculated values
of the terrain factor, q, are summarized in Table 12.
DOE/NWV
The terrain factors calculated from fallout sample analytical data
by means of Eq. 25 eontains sampling bias errors and errors in all the
input terms to Eq. 25 as well as the true terrain factor (i.e. error in
W, differences in the true fission yield factor per KT from 1.45 x 1023,
error in @,, b, and the gross fractionation factors). Many of these
errors are constant for a given shot. The sampling error is probably
one of major contributors to errorswhich are not constant for a given
shot.
The average values of q and q/q in Table 12 were calculated on
the basis that the sampling error was the major contributing factor
where values of q greater than one were obtained. This assumes that,
for the data used in Table 12, the sampling bias is most likely to be
on the negative side - i.e. the sampling devices used would tend to
‘
47