/*===================================================================*/ /* NRDF D2004 Data No.2 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,2; D#=D2004; TITLE=/ Astrophysical reaction rate for alpha (alpha n, gamma)9Be by photodisintegration /; ATH=(K.SUMIYOSHI'1', H.UTSUNOMIYA'2', S.GOKO'2', T.KAJINO'3'); INST-ATH=(2JPNJPN'1', 2JPNKON'2', 2JPNJPN'3'); /* '1' Numazu College of Technology, Numazu */ /* '2' Department of Physics */ /* '3' National Astronomical Observatory, Mitaka */ REF=NP/A; VLP=709(2002)467; /* Secondary reference - Utsunomiya, Private communication(2007) RCTS=(9BE(GAMMA,N)8BE, 9BE(GAMMA,), 9BE(GAMMA,GAMMA)9BE, 9BE(GAMMA,N)); PHQS=(XSECTN, RESN-WDTH); /*===================================================================*/ /* Experimental Conditions */ /*===================================================================*/ \\EXP,2; /* 2007-01-09 : Recieved, On. Received by e-mail from A.Makinaga /* 2007-01-12 : Compiled, On */ /* Related references - Proofread by Hiroaki Utsunomiya (2007.01.13), k2003003, J(Phys)63. /* Additional results shown but not compiled - Reaction rate (Thermal reaction rate for alpha+alpha+n -> gamma + 9Be) CHM=ELM; PHYS-FORM=SLD; THK-TGT=XMG/CM**2'4'; /* '4' 4 cm thick */ POL-TGT=0%; ALGN-TGT=0%; ACC=X'5'; /* '5' Electron storage ring, To store electron beam at 308 to 587 MeV */ INST-ACC=2JPNAIS'6'; /* '6' Electron storage ring TERAS */ POL-PRJ=0%; ION-SOURCE=/ Laser compton scattering photons (lambda=1053 nm (1.2 eV) laser photons used) /; DET-PARTCL=N; COINC=NO; ANT-COINC=NO; DET-SYS=(BF3'7',BGO'8'); /* '7' To detect neutrons */ /* '8' To monitor flux of photon beam */ /* n+8Be and 5He+ alpha channel cannot be distinguished experimentally. Cross sections presented in the reference are based on the detection efficiency for the n+8Be channel. (Authors confirmed that the difference in detection efficiency between the two channels is negligible.) */ /* Related references - common, M0438002, J(Cana)60. . See also EXFOR commo.n. - Radioactive isotope measurement, F0343002, J(Cana)61. . See also EXFOR 1672.. RCT=9BE(GAMMA,N)8BE; PHQ=XSECTN; /* Flux correction (Not the total but a partial flux is responsible near neutron threshold of 8Be+n.) */ /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,2; /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; INC-ENGY-LAB'11' SIGMA DELTA-SIGMA'12' (MEV) (MB) (MB) 1.74 0.92 +-0.03 1.76 0.75 +-0.03 1.77 0.70 +-0.03 1.81 0.68 +-0.03 1.82 0.70 +-0.03 1.85 0.47 +-0.02 1.86 0.55 +-0.03 2.06 0.21 +-0.03 \END; /*===================================================================*/ |