ENTRY M0688 20100127 M051M068800000001 SUBENT M0688001 20100127 M051M068800100001 BIB 16 64 M068800100002 TITLE New data for total 3He(g,p)D and 3He(g,pp)n cross M068800100003 sections compared to current theory. M068800100004 AUTHOR (S.NAITO,Y.NAGAI,T.SHIMA,H.MAKII,K.MISHIMA,K.TAMURA, M068800100005 H.TOYOKAWA,H.OHGAKI,J.GOLAK,S.SKRIBANSKI,H.WITALA, M068800100006 W.GLOCKLE,A.NOGGA,H.KAMADA) M068800100007 INSTITUTE (2JPNOSA,2JPNTIT,2JPNKTO,2JPNAIS,3POLUJK,2GERBOC, M068800100008 2GERJUL) M068800100009 REFERENCE (J,PR/C,73,034003,2006) M068800100010 FACILITY (ESTRG,2JPNAIS) Electron storage ring TERAS at the M068800100011 National Institute of Advanced Industrial Science M068800100012 and Technology (AIST). M068800100013 INC-SOURCE (MPH,LASER) Pulsed 537 nm Nd-YLF laser Compton M068800100014 backscattered (LCS) gamma-ray beam. M068800100015 METHOD (EXTB,SITA) M068800100016 SAMPLE A 244 mm in diameter x 400 mm vessel filled with a M068800100017 mixed gas of 80 % enriched 3He (99.7 % enriched in M068800100018 3He) as a target for photodisintegration reactions M068800100019 and 20 % CH4 as an operational gas of the M068800100020 TPC-detector. The total pressure - 1066 bar at 22.3 M068800100021 C. M068800100022 DETECTOR (TRD) The 4PI time projection chamber (TPC) consists M068800100023 of a drift region with a uniform electric field with M068800100024 an active area of 60 x 60 mm**2 and a length of 250 M068800100025 mm, and a multiware proportional counter (MWPC) M068800100026 region with one anode and two catode planes. M068800100027 ANALYSIS Direct measurement. M068800100028 ERR-ANALYS (ERR-T) Quated uncertainty is the result of the M068800100029 combined uncertainties on the statistics of the M068800100030 reaction yield, and a systematic uncertainty of M068800100031 about 3 %, 2 % from the incident gamma-ray flux, M068800100032 1 % from the target number of 3He, and less than 1 % M068800100033 from the effective length of the TPC. M068800100034 MISC-COL (MISC1) Calculated results obtained using current M068800100035 theory based on AV18 potential. M068800100036 (MISC2) Calculated results obtained using current M068800100037 theory based on AV18 + Urbana IX nuclear forces. M068800100038 REL-REF (N,,R.B.WIRINGA+,J,PR/C,51,38,1995) AV18 potential. M068800100039 (N,,B.S.PUDLINER+,J,PR/C,56,1720,1997) URBANA IX 3n M068800100040 forces. M068800100041 COMMENT A simultaneous measurement of the cross sections of M068800100042 the 3He(g,p)D and 3He(g,pp)n reactions has been M068800100043 performed for the first time using monoenergetic M068800100044 pulsed gamma-rays at = 10.2 and 16.0 MeV. M068800100045 Charged fragments from the reactions were detected M068800100046 with an efficiency of 100 % using a 4PI time M068800100047 projection chamber containing 3He gas an active M068800100048 target. The incident gamma-ray flux was measured by M068800100049 a gamma-ray detector. Both the track and energy loss M068800100050 signals of charged fragments were obtained in an M068800100051 off-line analysis and used to clarify identity the M068800100052 reaction channel. Thus, the (g,p) and (g,pp) cross M068800100053 sections have been determined with small M068800100054 uncertainty. A comparison of the new data to current M068800100055 theory based on AV18 + Urbana IX nuclear forces M068800100056 including PI- and RHO-like meson exchange currents M068800100057 shows a severe discrepancy at 10.2 MeV, while at M068800100058 16.0 MeV data and theory agree within about 12 %. M068800100059 Three-nucleon force effects are small, but in M068800100060 general shift the theory in the correct direction. M068800100061 STATUS (TABLE) Data from the Table 2. M068800100062 HISTORY (20060504C) Data were compiled at MSU SINP CDFE by M068800100063 V.V.Varlamov. M068800100064 (20091002A) Correction of AUTHOR - H.KAMADA, ERR-T M068800100065 in SUBENTs 2 - 5, COMMON in SUBENT 2. M068800100066 ENDBIB 64 0 M068800100067 COMMON 1 3 M068800100068 EN-RSL-FW M068800100069 PER-CENT M068800100070 4. M068800100071 ENDCOMMON 3 0 M068800100072 ENDSUBENT 71 0 M068800199999 SUBENT M0688002 20100127 M051M068800200001 BIB 1 1 M068800200002 REACTION (2-HE-3(G,P)1-H-2,,SIG) M068800200003 ENDBIB 1 0 M068800200004 COMMON 1 3 M068800200005 ERR-T M068800200006 MB M068800200007 .05 M068800200008 ENDCOMMON 3 0 M068800200009 DATA 4 2 M068800200010 EN DATA MISC1 MISC2 M068800200011 MEV MB MB MB M068800200012 10.2 .77 1.01 .96 M068800200013 16. .65 .71 .72 M068800200014 ENDDATA 4 0 M068800200015 ENDSUBENT 14 0 M068800299999 SUBENT M0688003 20100127 M051M068800300001 BIB 1 1 M068800300002 REACTION (2-HE-3(G,N+P)1-H-1,,SIG) M068800300003 ENDBIB 1 0 M068800300004 NOCOMMON 0 0 M068800300005 DATA 5 2 M068800300006 EN DATA ERR-T MISC1 MISC2 M068800300007 MEV MB MB MB MB M068800300008 10.2 .15 .05 .55 .49 M068800300009 16. .91 .06 1.07 1.04 M068800300010 ENDDATA 4 0 M068800300011 ENDSUBENT 10 0 M068800399999 SUBENT M0688004 20100127 M051M068800400001 BIB 1 1 M068800400002 REACTION ((2-HE-3(G,P)1-H-2,,SIG)+(2-HE-3(G,N+P)1-H-1,,SIG)) M068800400003 ENDBIB 1 0 M068800400004 NOCOMMON 0 0 M068800400005 DATA 5 2 M068800400006 EN DATA ERR-T MISC1 MISC2 M068800400007 MEV MB MB MB MB M068800400008 10.2 .92 .08 1.56 1.45 M068800400009 16. 1.56 .09 1.78 1.76 M068800400010 ENDDATA 4 0 M068800400011 ENDSUBENT 10 0 M068800499999 SUBENT M0688005 20100127 M051M068800500001 BIB 1 1 M068800500002 REACTION ((2-HE-3(G,P)1-H-2,,SIG)/(2-HE-3(G,N+P)1-H-1,,SIG)) M068800500003 ENDBIB 1 0 M068800500004 NOCOMMON 0 0 M068800500005 DATA 5 2 M068800500006 EN DATA ERR-T MISC1 MISC2 M068800500007 MEV NO-DIM NO-DIM NO-DIM NO-DIM M068800500008 10.2 5.1 1.6 1.84 1.96 M068800500009 16. .71 .04 .67 .69 M068800500010 ENDDATA 4 0 M068800500011 ENDSUBENT 10 0 M068800599999 ENDENTRY 5 0 M068899999999