ENTRY 14305 20111010 13781430500000001
SUBENT 14305001 20111010 13781430500100001
BIB 11 53 1430500100002
TITLE Measurements of the differential cross sections for 1430500100003
the elastic n-3H and n-2H scattering at 14.1 MeV by 1430500100004
using an inertial confinement fusion facility 1430500100005
AUTHOR (J.A.Frenje,C.K.Li,F.H.Seguin,D.T.Casey,R.D.Petrasso, 1430500100006
D.P.McNabb,P.Navratil,S.Quaglioni,T.C.Sangster, 1430500100007
V.Y.Glebov,D.D.Meyerhofer) 1430500100008
INSTITUTE (1USAMIT,1USALRL,1USAROC) 1430500100009
REFERENCE (J,PRL,107,122502,2011) 1430500100010
FACILITY (FNS,1USAROC) Experiment performed at OMEGA laser at 1430500100011
Laboratory for Laser Energetics, University of 1430500100012
Rochester 1430500100013
SAMPLE Deuterium-tritium gas filled thin glass capsules made 1430500100014
of SiO2 with diameter of about 850mu-m, a gas-fill 1430500100015
pressure of about 20 atm, and a shell thickness of 1430500100016
3.5 mu-m.The fuel gas mixture was 48.2+-0.3 % 1430500100017
deuterium, 48.8+-0.3% tritium, 2.5% hydrogen, and 1430500100018
0.5% helium 3 from the tritium decay. 1430500100019
DETECTOR (MAGSP,TRD)The energy spectra of the emitted tritons 1430500100020
and deuterons, elastically scattered by the 14.1-MeV 1430500100021
neutrons, were measured simultaneously by using a 1430500100022
magnet-based charged-particle spectrometer (CPS), 1430500100023
installed on the OMEGA chamber. The detector plane of 1430500100024
the CPS was comprised of two pieces of CR-39, which 1430500100025
is a plastic polymer that is insensitive to gamma 1430500100026
rays and x rays produced in an implosion. Different 1430500100027
particle track characteristics in CR-39 allow the CPS 1430500100028
to make simultaneous measurements of the scattered 1430500100029
deuterons and tritons with energies greater than 3.7 1430500100030
and 2.5 MeV, respectively 1430500100031
INC-SOURCE (D-T)Capsules containing D-T mixture were imploded by 1430500100032
60 laser beams that uniformly delivered 30 kJ to the 1430500100033
capsule in a 1-ns square pulse. As the laser energy 1430500100034
is quickly absorbed by the glass, the outer part of 1430500100035
the glass shell explodes outward while the remaining 1430500100036
part moves inward. The imploding part of the shell 1430500100037
acts a piston and drives a shock through the 1430500100038
deuterium-tritium fuel that heats the ions. 1430500100039
ANALYSIS The differential cross section for the elastic n-3H 1430500100040
and n-2H scattering was determined from the measured 1430500100041
deuteron and triton spectra by deconvolving the CPS 1430500100042
spectrometer response and the Doppler-broadened 1430500100043
14.1MeV-neutron spectrum 1430500100044
The n-2H cross section was normalized to a Faddeev 1430500100045
calculation that is accurate to about 1%, and that 1430500100046
normalization factor, modified by the deuterium-tritium1430500100047
fuel ratio, was subsequently applied to the measured 1430500100048
n-3H cross section 1430500100049
ERR-ANALYS (ERR-T) Total uncertainty consisting of statistical 1430500100050
uncertainty and systematic uncertainty of the 1430500100051
normalization factor 1430500100052
(ERR-SYS) Systematic uncertainty of the normalization 1430500100053
factor 1430500100054
HISTORY (20111010C) Compiled by S.H. 1430500100055
ENDBIB 53 0 1430500100056
COMMON 2 3 1430500100057
EN ERR-SYS 1430500100058
MEV PER-CENT 1430500100059
14.1 1.4 1430500100060
ENDCOMMON 3 0 1430500100061
ENDSUBENT 60 0 1430500199999
SUBENT 14305002 20111010 13781430500200001
BIB 3 3 1430500200002
REACTION (1-H-3(N,EL)1-H-3,,DA) 1430500200003
PART-DET (T) 1430500200004
STATUS (TABLE) Data taken from tab.1 of the reference 1430500200005
ENDBIB 3 0 1430500200006
NOCOMMON 0 0 1430500200007
DATA 3 41 1430500200008
ANG-CM DATA-CM ERR-T 1430500200009
ADEG MB/SR MB/SR 1430500200010
58.6 116.7 4.4 1430500200011
61.2 106.6 3.3 1430500200012
63.7 94.7 3.5 1430500200013
66.1 88.8 3.6 1430500200014
68.3 81.6 3.7 1430500200015
70.5 75.0 3.9 1430500200016
72.6 67.8 3.7 1430500200017
74.7 60.3 3.6 1430500200018
76.8 53.4 3.5 1430500200019
79.0 48.1 3.2 1430500200020
81.2 44.0 3.2 1430500200021
83.4 37.1 3.3 1430500200022
85.7 31.5 3.1 1430500200023
87.9 29.4 2.8 1430500200024
90.3 26.3 2.9 1430500200025
92.6 21.7 2.9 1430500200026
94.8 17.5 2.7 1430500200027
97.1 15.7 2.5 1430500200028
99.3 11.9 2.4 1430500200029
101.5 10.2 2.5 1430500200030
103.6 11.3 3.3 1430500200031
105.7 11.2 2.2 1430500200032
107.8 7.4 1.9 1430500200033
110.0 7.8 1.9 1430500200034
112.2 7.6 1.8 1430500200035
114.4 7.5 1.6 1430500200036
116.8 8.5 1.3 1430500200037
119.4 8.5 1.3 1430500200038
122.0 9.6 1.3 1430500200039
124.8 12.0 1.2 1430500200040
127.7 14.4 1.4 1430500200041
130.7 15.5 1.3 1430500200042
133.7 21.2 1.4 1430500200043
136.8 26.5 1.7 1430500200044
139.8 29.9 1.8 1430500200045
142.9 37.2 2.2 1430500200046
146.3 45.6 2.7 1430500200047
150.2 46.5 3.4 1430500200048
155.2 61.4 4.7 1430500200049
162.2 70.5 6.0 1430500200050
172.3 79.4 7.7 1430500200051
ENDDATA 43 0 1430500200052
ENDSUBENT 51 0 1430500299999
SUBENT 14305003 20111010 13781430500300001
BIB 3 4 1430500300002
REACTION (1-H-2(N,EL)1-H-2,,DA) 1430500300003
PART-DET (D) 1430500300004
STATUS (TABLE) Data presented in fig.3a of the reference 1430500300005
obtained from author (J.A.F.) 1430500300006
ENDBIB 4 0 1430500300007
NOCOMMON 0 0 1430500300008
DATA 3 45 1430500300009
ANG-CM DATA-CM ERR-T 1430500300010
ADEG MB/SR MB/SR 1430500300011
66.4 55.6 6.2 1430500300012
68.3 48.1 6.1 1430500300013
70.2 47.7 5.5 1430500300014
72.0 52.3 5.0 1430500300015
73.8 45.0 5.3 1430500300016
75.5 45.5 5.1 1430500300017
77.3 45.4 4.7 1430500300018
79.1 37.8 5.7 1430500300019
81.0 40.9 4.9 1430500300020
82.9 39.9 4.5 1430500300021
84.8 35.6 4.7 1430500300022
86.7 29.3 5.3 1430500300023
88.6 26.1 4.9 1430500300024
90.6 26.4 4.4 1430500300025
92.5 26.2 4.2 1430500300026
94.5 26.0 4.0 1430500300027
96.4 26.2 3.2 1430500300028
98.3 27.6 3.7 1430500300029
100.1 22.9 3.8 1430500300030
102.0 20.7 3.3 1430500300031
103.8 19.5 3.9 1430500300032
105.6 15.4 3.5 1430500300033
107.3 15.3 3.1 1430500300034
109.1 15.8 3.9 1430500300035
111.0 12.8 4.2 1430500300036
112.8 11.5 4.2 1430500300037
114.8 13.3 3.8 1430500300038
116.8 12.0 3.3 1430500300039
118.9 9.1 2.8 1430500300040
121.2 11.0 3.9 1430500300041
123.5 11.4 4.3 1430500300042
125.9 9.0 3.9 1430500300043
128.4 6.1 2.9 1430500300044
130.9 5.8 2.9 1430500300045
133.4 8.7 2.3 1430500300046
136.0 10.3 2.0 1430500300047
138.6 12.0 2.2 1430500300048
141.2 19.9 2.2 1430500300049
143.9 24.8 2.1 1430500300050
146.8 27.5 2.3 1430500300051
150.1 38.3 2.7 1430500300052
154.2 53.1 4.4 1430500300053
159.6 69.2 5.9 1430500300054
166.9 87.6 9.1 1430500300055
177.1 123.3 12.4 1430500300056
ENDDATA 47 0 1430500300057
ENDSUBENT 56 0 1430500399999
ENDENTRY 3 0 1430599999999