ENTRY A0626 20231230 A062600000001
SUBENT A0626001 20231230 20240316 A062600100001
BIB 11 54 A062600100002
TITLE Cross section measurements of the H-1(HE3,P)He-3 A062600100003
reactions at 20 and 30 degrees between 1.6 and 2.8 MeV.A062600100004
AUTHOR (G.Terwagne, G.G.Ross, L.Leblanc) A062600100005
REFERENCE (J,JAP,79,8886,1996) A062600100006
INSTITUTE (2BLGNAM) A062600100007
(1CANCAN) University of Quebec, Varennes A062600100008
FACILITY (VDGT,2BLGNAM) The 2.5 MV Van de Graff accelerator A062600100009
SAMPLE Two silicon samples cut out of a silicon wafer with A062600100010
orientation (100) were used as substrates. A thin A062600100011
film of alpha-Si-C:H was deposited simultaneously onto A062600100012
these two substrates by means of plasma enhanced A062600100013
chemical vapor deposition. The standards were A062600100014
transferred in air to the analysis chamber, in which A062600100015
the typical pressure was 2E-8 mbar during the analysis.A062600100016
The composition of the Si-C:H film was measured by A062600100017
means of Rutherford backscattering spectroscopy on the A062600100018
Si-C:H film. The measured ratio was Si/C =0.50. A062600100019
The stability of hydrogen contents during the A062600100020
bombardment with high energy He-3 beam was verified. A062600100021
Prior to the cross section measurement of the A062600100022
H-1(He3,p)2-He-3 reaction, a very thin layer of gold A062600100023
2.86*10E+15 atoms/cm**2 was evaporated on the A062600100024
standard in order to normalize the results. A062600100025
DETECTOR (SIBAR) Three detectors were placed in the analyzing A062600100026
chamber pumped down with a turbomolecular pump and the A062600100027
residual pressure was lower than 5*10E-7 mbar. A062600100028
The first detector was placed at 100 mm from the beam A062600100029
impact at 20 or 30 degrees relative to the incident A062600100030
beam. A062600100031
The second surface barrier detector was placed 70 mm A062600100032
from the beam impact at 90 degree relative to the A062600100033
incident beam. A062600100034
The third detector placed at the backscattering angle A062600100035
of 140 degree, was used to measured the integrated beamA062600100036
charge with the signal due to the evaporated layer A062600100037
of gold on the standard. A062600100038
METHOD (BCINT) A062600100039
STATUS (TABLE,,G.Terwagne,W,TERWANGE,19990113) A062600100040
ERR-ANALYS (ERR-T) The absolute error on the cross sections A062600100041
H-1(He3,p)He3 measured relative to gold is due to threeA062600100042
different factors. The overall error has been estimatedA062600100043
to be less than 8%. A062600100044
(ERR-S) Statistical errors on the determination of the A062600100045
area under the peak due to the nuclear reaction and theA062600100046
area under gold information. A062600100047
(ERR-2) Systematical errors on the measurements of the A062600100048
solid angles. A062600100049
(ERR-3) Experimental errors due to the measurement of A062600100050
the number of hydrogen atoms and the number of gold A062600100051
atoms. A062600100052
HISTORY (19990113C) A062600100053
(20040326A) Misprint in DATA-section is corrected A062600100054
(20040326U) Last checking has been done. A062600100055
(20231230A) SD: Correction in Subent 002. A062600100056
ENDBIB 54 0 A062600100057
COMMON 3 3 A062600100058
ERR-S ERR-2 ERR-3 A062600100059
PER-CENT PER-CENT PER-CENT A062600100060
3. 2. 4. A062600100061
ENDCOMMON 3 0 A062600100062
ENDSUBENT 61 0 A062600199999
SUBENT A0626002 20231230 20240316 A062600200001
BIB 2 2 A062600200002
REACTION (1-H-1(HE3,EL)1-H-1,,DA,P) A062600200003
HISTORY (20231230A) SD: SF7=P added to REACTION code. A062600200004
ENDBIB 2 0 A062600200005
NOCOMMON 0 0 A062600200006
DATA 4 27 A062600200007
EN ANG DATA ERR-T A062600200008
KEV ADEG MB/SR MB/SR A062600200009
1900. 30. 517.8 41.42 A062600200010
2000. 20. 472.95 37.84 A062600200011
2000. 30. 476.21 38.1 A062600200012
2100. 20. 482.36 38.59 A062600200013
2100. 30. 448.68 35.89 A062600200014
2200. 20. 442.09 35.37 A062600200015
2200. 30. 452.18 36.17 A062600200016
2250. 30. 497.18 39.77 A062600200017
2300. 20. 519.29 41.54 A062600200018
2300. 30. 500.78 43.6 A062600200019
2350. 20. 451.29 36.1 A062600200020
2400. 20. 505.17 40.41 A062600200021
2400. 20. 508.79 40.7 A062600200022
2400. 30. 484.59 38.77 A062600200023
2400. 30. 501.39 40.11 A062600200024
2500. 20. 456.72 36.54 A062600200025
2500. 30. 460.87 36.87 A062600200026
2600. 20. 491.53 39.32 A062600200027
2600. 30. 469.98 37.6 A062600200028
2700. 20. 529.19 42.33 A062600200029
2700. 30. 406.75 32.54 A062600200030
2800. 20. 546.15 43.69 A062600200031
2800. 30. 492.12 39.37 A062600200032
2900. 20. 578.51 46.28 A062600200033
2900. 30. 529.18 42.33 A062600200034
3000. 20. 646.14 51.69 A062600200035
3000. 30. 551.96 44.16 A062600200036
ENDDATA 29 0 A062600200037
ENDSUBENT 36 0 A062600299999
ENDENTRY 2 0 A062699999999