ENTRY 23332 20171107 22672333200000001 SUBENT 23332001 20171107 22672333200100001 BIB 12 42 2333200100002 TITLE Assessing the near threshold cross section of the 2333200100003 17O(n,alpha)14C reaction by means of the Trojan horse 2333200100004 method. 2333200100005 AUTHOR (G.L.Guardo,C.Spitaleri,L.Lamia,M.Gulino,M.La Cognata, 2333200100006 X.Tang,R.deBoer,X.Fang,V.Goldberg,J.Mrazek, 2333200100007 A.Mukhamedzhanov,M.Notani,R.G.Pizzone,G.G.Rapisarda, 2333200100008 M.L.Sergi,M.Wiescher) 2333200100009 INSTITUTE (2ITYLNS) 2333200100010 (2ITYCAT) 2333200100011 (2ITYENN) 2333200100012 (1USANOT) 2333200100013 (3CZRUJF) 2333200100014 (1USATAM) 2333200100015 REFERENCE (J,PR/C,95,025807,2017) 2333200100016 #doi:10.1103/PhysRevC.95.025807 2333200100017 (S,AIP-1852,080004,2017) - prelim.results 2333200100018 REL-REF (O,,G.L.Guardo+,J,PR/C,95,025807,2017) 2333200100019 CP data for experiment at 1USANOT, NSL - 2333200100020 Figs. 9, 10, 12-lower 2333200100021 (O,,G.L.Guardo+,J,PR/C,95,025807,2017) 2333200100022 CP data for experiment at 2ITYLNS, LNS - 2333200100023 Figs. 12-upper 2333200100024 Fig.13-result of NSL+LNS 2333200100025 (I,,M.Gulino+,J,PR/C,87,012801,2013) 2333200100026 FACILITY (VDGT,2ITYLNS) Setup is similar to that at NSL,USA. 2333200100027 METHOD (EDE) To discriminate carbon nuclei . 2333200100028 Exp.resolution 35 keV (FWHM) 2333200100029 ANALYSIS (TROJA) O-17(n,alpha)C-14 was studied via 2333200100030 H-2(O-17,alpha C-14)H-1 three-body process, where a 2333200100031 deuteron was chosen as TH nucleus. 2333200100032 41 MeV 17-O beam impinging on a thin self-supported 2333200100033 deuterated polyethylene (CD2) target. 2333200100034 DETECTOR (TELES,IOCH,PS) Two telescopes, each made of 2333200100035 ionization chamber (IC) and a 1000-micrometer-thick 2333200100036 silicon position-sensitive detector(PSD) - for C-14 2333200100037 detection. 2333200100038 Four additional 500-micrometer PSDs - for alpha 2333200100039 particles detection 2333200100040 PART-DET (A) Alphas and C-14 2333200100041 CORRECTION Background < 7% . 2333200100042 HISTORY (20170409C) M.M. 2333200100043 (20171107U) SD: Ref. AIP-1852(2017)080004 was added. 2333200100044 ENDBIB 42 0 2333200100045 NOCOMMON 0 0 2333200100046 ENDSUBENT 45 0 2333200199999 SUBENT 23332002 20170409 22592333200200001 BIB 5 21 2333200200002 REACTION 1(8-O-17(N,0),,EN) Resonance Energy 2333200200003 2(8-O-17(N,EL),,WID) Elastic Width 2333200200004 3(8-O-17(N,A),,WID) Alpha Width 2333200200005 4(8-O-17(N,TOT),,WID) Total Width 2333200200006 ANALYSIS A scalled modified R-matrix calculation was used to fit2333200200007 the THM resonances and allowed to determine the neutron2333200200008 and alpha reduced widths. 2333200200009 The reduced widths extracted from R-matrix fit on the 2333200200010 THM can be inserted in Eq.(8) to reproduce the availabl2333200200011 direct data cross section. 2333200200012 Reduced widths for the two highest levels were 2333200200013 determined to reproduce the partial widths of 2333200200014 J.Wagemans+ and Avila+ . 2333200200015 REL-REF (R,,J.Wagemans+,J,PR/C,65,034614,2002) 2333200200016 (R,,M.L.Avila+,J,PR/C,90,042801,2014) 2333200200017 ERR-ANALYS (DATA-ERR) Type of uncertainty is not explained clear, 2333200200018 probably total 2333200200019 (ERR-1) Error introduced by normalization procedure 2333200200020 STATUS (TABLE) Table II of J,PR/C,95,025807,2017 2333200200021 DEP, Cross section given on Fig.13 of 2333200200022 PR/C,95,025807,2017 2333200200023 ENDBIB 21 0 2333200200024 COMMON 1 3 2333200200025 ERR-1 2333200200026 PER-CENT 2333200200027 15. 2333200200028 ENDCOMMON 3 0 2333200200029 DATA 7 4 2333200200030 DATA 1DATA 2DATA-ERR 2DATA 3DATA-ERR 3DATA 42333200200031 DATA-ERR 4 2333200200032 KEV EV EV EV EV EV 2333200200033 EV 2333200200034 -6. 0.01 0.001 2400. 300. 2400. 2333200200035 300. 2333200200036 75. 0.05 0.006 36. 5. 36. 2333200200037 5. 2333200200038 178. 86. 11. 2200. 300. 2260. 2333200200039 300. 2333200200040 244. 1700. 450. 13000. 3400. 14700. 2333200200041 3800. 2333200200042 ENDDATA 12 0 2333200200043 ENDSUBENT 42 0 2333200299999 ENDENTRY 2 0 2333299999999