cane
UCRL-3087
Z 204(Gd o2 higher), then the i:ssion yield curves could be considered
to be symmetric.
This situation appeared unlixeiy, for ouly one neutron-
deiicient species (ng! #9) wae detected mu: the entire rare-earth region.
More conclusively, if the m.ajor portion of the yieid o1 niass lob layin the
rezion oi Z 2 64, then the disect-formation cross section o.
£16 should
have been os: magnitude comparable to or lazgez than that o1
om 7°,
.
urement o: the d rect-lorization Cross sect:on o1
GO". ot the
Ex) ~~
"
was forn.ed freon. its
Sro
1o6
Meas-
.~ loo
Eu
showed that over
parent by beta decay.
Thus,
the i:ssion yieid distribution avove 20 Mev is not symmetrical.
The tission cross sections shown in Figs. 3 and 4 and Tatje Ill were
obtained cy intezration undes the fission-yield curves.
data ol previous workers,
14,15, 16
Also shown are the
The ditterences vetween the present
work anc that of re:erence 2 ceilects the erro: ol the assumption that the
lission-product distribution 1s tcmutetrieias,
Tabie IIL
unre lission crose sections, in barns,
Protons
Eneryy
{Mev}
|
_Deuterons
|
(
Energy
)
20
1.03
20
1.6)
(>
2.13
a
(Mev)
19
0. 029
32
i, if
7U
1,47
100
1, 49
130
1.44
.
ldu
2.42
2606
L,4a7
!
les
2.4>
2.0
1.36
:
120
2.3%
300
1. 46
340
l.sy
|
:
170
2.48
i90
2.49
14 J. A. Junperman, Phys. Rev. 79, 632 (1940).
13
ee
.
..
16
oe
H. M. Sreiner and J. A, Junzerman,
Phys. Rev. JQ],
-
.
607 (1956).
G, N. Harding, Atomic Ener,y Kesearch Establishment Report No. .
AERE/NE-14:s0,
00018494
Harweli,
Berns.,
Engi.,
June 1994 (unpublished).
-