ENTRY S0089 20200219 S027S008900000001 SUBENT S0089001 20200219 S027S008900100001 BIB 12 60 S008900100002 TITLE Measurement of differential cross section of S008900100003 D(3He,p)4He from 0.8 MeV to 3.6 MeV S008900100004 AUTHOR (J.P.Zhu,X.Xiao,S.Yan,Y.Gao,J.M.Xue,Y.G.Wang) S008900100005 INSTITUTE (3CPRBJG) S008900100006 REFERENCE (J,NIM/B,412,81,2017) S008900100007 #doi:10.1016/j.nimb.2017.07.020 S008900100008 FACILITY (VDG,3CPRBJG) 4.5 MV Van de Graaff accelerator S008900100009 INC-SOURCE The 3He+ beam was produced and selected by a 90 deg S008900100010 bending magnet, and then passed through a rectangular S008900100011 aperture, which defined a beam spot area of 2 mm x 5 S008900100012 mm at normal incidence. S008900100013 SAMPLE The deuterium target is a thin layer of amorphous S008900100014 deuterated hydrocarbon (a-C:D) deposited on top of S008900100015 optically flat Si<111> plate prepared by radio S008900100016 frequency discharge from CD4 at Max-Planck-Insitut S008900100017 fur Plasmaphysik (IPP Garching). The amount of D was S008900100018 determined by nuclear reaction analysis at the S008900100019 Garching tandem accelerator. D density of this sample S008900100020 is 1.4E18 D/cm2 with a D/C ratio of 0.64 and the S008900100021 uncertainty is about 5%. S008900100022 DETECTOR (SIBAR) Two Au-Si surface barrier detectors S008900100023 positioned in the cylindrical experimental chamber S008900100024 for detecting projectile protons and Rutherford S008900100025 backscattering (RBS) 3He particles, the vacuum in S008900100026 chamber was kept in 1.0E-3 Pa. Protons were detected S008900100027 at a laboratory angle of 135 deg, the depletion depth S008900100028 of the detector is 2000 um for completely stopping S008900100029 high energy protons. RBS 3He ions were detected at an S008900100030 angle of 153 deg. Both the solid angles of two S008900100031 detectors were determined based on the mechanical S008900100032 distances. The solid angle of the nuclear reaction S008900100033 analysis detector is 8.5E-3 sr with an uncertainty of S008900100034 2.7% and the solid angle of the RBS detector is S008900100035 5.0E-3 sr with an uncertainty of 2.0%. S008900100036 METHOD The samples were mounted in a rotatable octahedral S008900100037 copper target and the distances between target center S008900100038 and two detectors both were 77.1 mm. In order to S008900100039 limit the solid angle and reduce the geometry S008900100040 straggling, a parabolic slit with a width of 3 mm and S008900100041 height of 17 mm was put in front of the detector. A S008900100042 50 um thick mylar foil was also used to prevent S008900100043 backscattering 3He and 4He produced by nuclear S008900100044 reaction from entering the window. To reduce the S008900100045 effect of dead time and pile-up on backscattering S008900100046 signal, a 3 mm x 10 mm parabolic slit was mounted S008900100047 ahead of the RBS detector. S008900100048 ANALYSIS (NTRTH) Rutherford backscattering and nuclear S008900100049 reaction signals were registered on two multi-channel S008900100050 analyzers simultaneously. A program named SIMNRA was S008900100051 used to analyze and simulate recorded spectra. Since S008900100052 backscattering of 3He from Si is Rutherford until S008900100053 3.875 MeV, incident 3He dose was determined by S008900100054 simulating the height of the front edge of Si signal S008900100055 in RBS spectrum. S008900100056 ERR-ANALYS (ERR-T) Total uncertainty S008900100057 (ERR-S,0.,2.4) The statistical error of proton yields S008900100058 (ERR-1) The areal density of D in the deuterium target S008900100059 (ERR-2) Calculation of the incident 3He dose S008900100060 (ERR-3) The mechanically measured solid angle S008900100061 HISTORY (20200219C) Jimin Wang (CNDC) S008900100062 ENDBIB 60 0 S008900100063 COMMON 3 3 S008900100064 ERR-1 ERR-2 ERR-3 S008900100065 PER-CENT PER-CENT PER-CENT S008900100066 5. 1.6 2. S008900100067 ENDCOMMON 3 0 S008900100068 ENDSUBENT 67 0 S008900199999 SUBENT S0089002 20200219 S027S008900200001 BIB 2 2 S008900200002 REACTION (1-H-2(HE3,P)2-HE-4,,DA) S008900200003 STATUS (TABLE) Table 1 of Nucl.Instrum.Meth.B,412(2017)81 S008900200004 ENDBIB 2 0 S008900200005 COMMON 1 3 S008900200006 ANG S008900200007 ADEG S008900200008 135. S008900200009 ENDCOMMON 3 0 S008900200010 DATA 3 15 S008900200011 EN DATA ERR-T S008900200012 KEV MB/SR PER-CENT S008900200013 752.2 54.2 6.0 S008900200014 954.9 38.9 6.1 S008900200015 1158.2 29.0 6.0 S008900200016 1360.7 21.5 6.1 S008900200017 1565.4 16.8 6.2 S008900200018 1766.7 13.3 6.2 S008900200019 1969.7 11.5 6.2 S008900200020 2170.0 9.9 6.1 S008900200021 2371.0 8.5 6.2 S008900200022 2574.1 8.0 6.1 S008900200023 2775.1 7.4 6.3 S008900200024 2976.6 7.1 6.3 S008900200025 3177.6 6.8 6.2 S008900200026 3376.3 6.6 6.2 S008900200027 3580.0 6.3 6.3 S008900200028 ENDDATA 17 0 S008900200029 ENDSUBENT 28 0 S008900299999 SUBENT S0089003 20200219 S027S008900300001 BIB 2 2 S008900300002 REACTION (1-H-2(HE3,P)2-HE-4,,DA) S008900300003 STATUS (TABLE) Table 2 of Nucl.Instrum.Meth.B,412(2017)81 S008900300004 ENDBIB 2 0 S008900300005 NOCOMMON 0 0 S008900300006 DATA 4 16 S008900300007 EN ANG-CM DATA-CM ERR-T S008900300008 MEV ADEG MB/SR PER-CENT S008900300009 1.8 130.6 15.7 6.5 S008900300010 1.8 139.8 15.9 6.1 S008900300011 1.8 148.9 15.8 6.2 S008900300012 1.8 157.9 15.7 6.0 S008900300013 2.4 131.4 10.6 6.1 S008900300014 2.4 140.5 10.5 6.2 S008900300015 2.4 149.5 10.5 6.1 S008900300016 2.4 158.3 10.6 6.1 S008900300017 3.0 132.2 8.9 6.2 S008900300018 3.0 141.2 9.0 6.3 S008900300019 3.0 150.0 9.0 6.0 S008900300020 3.0 158.7 9.1 6.2 S008900300021 3.6 132.8 8.1 6.4 S008900300022 3.6 141.7 8.2 6.3 S008900300023 3.6 150.5 8.3 6.1 S008900300024 3.6 159.0 8.6 6.5 S008900300025 ENDDATA 18 0 S008900300026 ENDSUBENT 25 0 S008900399999 ENDENTRY 3 0 S008999999999