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GSI
FRS
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Table 1: Cross sections in millibarns for production of the indicated isotopes with protons.
from "SPALLATION OF U AND Th NUCLEI WITH BeV-ENERGY PROTONS"
B. D. Pate and A. M. Poskanzer, Phys. Rev. 123 (1961) 647
http://publish.aps.org/abstract/PR/v123/p647/
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\ Energy
\ (BeV) 0.68 1.0 1.8 3.0 6.2
Nuclide \
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Target: 238U
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Np 238 0.25+-0.04 ... ... ... ...
236 (22 hr) 0.26+-0.03 ... ... ... ...
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U 237 63+-10 ... 55+-10 ... ...
232 4.7+-0.7 ... 3.2+-0.7 ... ...
230 0.23+-0.04 ... 0.20+-0.04 ... ...
229 0.05+-0.01 ... 0.040+-0.008 ... ...
228 0.024+-0.005 ... 0.017+-0.004 ... ...
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Pa 237 13+-2 ... 7.0+-0.5 10+-1 8+-1
235(a) 17+-2 ... 7.5+-0.5 8.6+-0.5 8.0+-0.5
234 (6.6 hr) 22+-4 ... 12+-2 12+-2 12+-2
233 19+-5 ... 11+-4 11+-4 13+-4
232 6.5+-0.8 ... 4.4+-0.5 3.3+-0.5 4.6+-0.5
229 4.9+-0.7 ... 2.4+-0.6 2.4+-0.6 3.0+-0.6
228 1.0+-0.1 ... 0.52+-0.08 0.64+-0.06 0.60+-0.06
227 0.39+-0.07 ... 0.20+-0.04 0.17+-0.04 0.15+-0.04
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Th 234 5+-3 ... 20+-10 6+-2 ...
233 7.5+-1.0 ... 10+-2 ... 9+-2
231(a) 3+-1 ... ... 7.4+-1.5 ...
228 2.7+-0.2 ... 2.6+-0.2 ... 2.5+-0.2
227 2.3+-0.2 2.2+-0.2 1.8+-0.2 1.9+-0.2 2.1+-0.2
226 2.3+-0.2 2.4+-0.2 2.0+-0.2 ... 2.0+-0.2
225 1.5+-0.2 ... 1.6+-0.2 ... ...
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Ac 228 1.1+-0.2 ... 0.9+-0.2 ... ...
226 1.5+-0.2 ... 1.4+-0.2 ... ...
225 1.6+-0.2 ... 1.4+-0.1 ... ...
224 2.1+-0.2 ... 1.6+-0.1 ... ...
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Target: 235U
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Np 238 ... ... ... ... ...
236 (22 hr) ... ... ... ... ...
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U 237 ... ... ... ... ...
232 25+-6 ... ... ... ...
230 1.3+-0.3 ... 6.3+-1.3 ... ...
229 0.10+-0.01 ... 0.06+-0.01 ... ...
228 0.017+-0.003 ... ... ... ...
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Pa 237 ... ... ... ... ...
235(a) <=0.20.5 ... <=0.2 ... ...
234 (6.6 hr) 23+-4 ... 20+-40 ... ...
233 23+-4 ... 18+-3 ... ...
232 6.6+-0.8 ... 4.3+-0.6 ... ...
229 4.2+-0.5 ... 1.4+-0.2 ... ...
228 1.4+-0.4 ... 0.28+-0.04 ... ...
227 0.42+-0.08 ... 0.05+-0.01 ... ...
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Th 234 ... ... ... ... ...
233 0.5+-0.2 ... 0.3+-0.2 ... ...
231(a) 8+-2 ... 10+-2 ... ...
228 1.5+-0.5 ... ... ... ...
227 1.7+-0.2 ... 1.9+-0.2 ... ...
226 1.8+-0.3 ... 2.2+-0.2 ... ...
225 1.2+-0.4 ... 1.8+-0.2 ... ...
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Ac 228 0.48+-0.10 ... 0.24+-0.06 ... ...
226 0.83+-0.08 ... 1.0+-0.2 ... ...
225 1.1+-0.2 ... 1.1+-0.2 ... ...
224 1.5+-0.2 ... 1.2+-0.2 ... ...
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Target: 232Th
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Np 238 ... ... ... ... ...
236 (22 hr) ... ... ... ... ...
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U 237 ... ... ... ... ...
232 ... ... ... ... ...
230 ... ... ... ... ...
229 ... ... ... ... ...
228 ... ... ... ... ...
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Pa 237 ... ... ... ... ...
235(a) ... ... ... ... ...
234 (6.6 hr) ... ... ... ... ...
233 ... ... ... ... ...
232 ... ... ... ... ...
229 2.3+-0.3 ... 2.4+-0.3 ... ...
228 0.8+-0.2 ... 0.6+-0.1 ... ...
227 0.26+-0.04 ... 0.22+-0.04 ... ...
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Th 234 ... ... ... ... ...
233 .... ... ... ... ...
231(a) 120+-20 ... 100+-10 ... ...
228 25+-4 ... ... ... ...
227 15+-3 ... 15+-2 ... ...
226 14+-2 ... 9.0+-1.0 ... ...
225 12+-2 ... 6.5+-1.0 ... ...
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Ac 228 5.3+-1.5 ... 8.0+-0.7 ... ...
226 5.5+-1.4 ... 7.3+-1.5 ... ...
225 5.0+-0.8 ... 8.2+-1.0 ... ...
224 5.4+-0.7 ... 5.4+-1.0 ... ...
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(a) beta-cumulative yield
These data present independent yields unless otherwise indicated. The errors shown are generally the
mean deviations of duplicate measurements. When the duplicates showed fortuitously good agreement or
when a duplicate determinateion was not made, an estimate basedon the compounding of the errors of
measurement was employed.
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