JAEA-Conf 2011-002 - 日本原子力研究開発機構

DDX [mb/MeV/sr]
DDX [mb/MeV/sr]
2
10
10
1
-1
10
-2
10
2
1 10
10
Neutron Energy [MeV]
2
10
10
1
-1
10
-2
10
2
1 10
10
Neutron Energy [MeV]
°
EXP. 015
PHITS
°
EXP. 060
PHITS
DDX [mb/MeV/sr]
DDX [mb/MeV/sr]
2
10
10
1
-1
10
-2
10
2
1 10
10
Neutron Energy [MeV]
2
10
10
1
-1
10
-2
10
2
1 10
10
Neutron Energy [MeV]
°
EXP. 030
PHITS
°
EXP. 075
PHITS
DDX [mb/MeV/sr]
DDX [mb/MeV/sr]
2
10
10
1
-1
10
-2
10
2
1 10
10
Neutron Energy [MeV]
2
10
10
1
-1
10
-2
10
2
1 10
10
Neutron Energy [MeV]
Fig. 6: Measured double-differential cross sections at incident oxygen energies of
290 MeV/u on C. They are compared with the PHITS2 calculations.
mental data are compared with PHITS2 calculations. The calculation values reproduces
our experimental results of 45◦ ,60◦ ,75◦and 90◦ reasonably well. However, the calculated
values tend to underestimate the cross sections at 15◦ and 30◦ .
5. Summary
We measured the double-differential cross sections for (O, xn) reaction. The 290 MeV/u
oxygen ions were used as incident particles. An NE102A plastic scintillator and NE213
liquid organic scintillator were employed to monitor the number of incident oxygen particles
and to detect emitted neutrons, respectively. The neutron detection efficiencies were
obtained by calculations with a Monte Carlo simulation code SCINFUL-QMD. The results
were obtained with the TOF technique. The cross sections were obtained for neutron
energy above 3.6 MeV. At overall range of energies, reasonable agreements were obtained
between the experimental data and the PHITS2 calculations at 45◦ ,60◦ ,75◦and 90◦ ,
while the calculated values tend to underestimate the cross sections at 15◦ and 30◦ in the
10∼200 MeV region.
JAEA-Conf 2011-002
°
EXP. 045
PHITS
°
EXP. 090
PHITS