/*===================================================================*/ /* NRDF D1822 Data No.1 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,1; D#=D1822; TITLE=/Structure of the unbound 11N nucleus by the (3He,6He) reaction/; PURPOSE=/This experiment was performed in order to confirm the energies and widths of the ground state and low-lying levels of the unbound 11N in the consideration of a possible halo structure in 11N./; ATH=(V.GUIMARAES'1', S.KUBONO'2', F.C.BARKER'3', M.HOSAKA'4', S.C.JEONG'5', I.KATAYAMA'5', T.MIYACHI'2', T.NOMURA'5', M.H.TANAKA'5', Y.FUCHI'5', H.KAWASHIMA'5', S.KATO'6', C.C.YUN'7', K.ITO'7', H.ORIHARA'7', T.TERAKAWA'7', T.KISHIDA'8', Y.PU'8', S.HAMADA'9', M.HIRAI'10', H.MIYATAKE'5'); INST-ATH=(3BZLUSP'1', 2JPNTOK'2', 3AULCBR'3', 2JPNJPN'4', 2JPNKEK'5', 2JPNYMG'6', 2JPNTOH'7', 2JPNIPC'8', 2JPNJAE'9', 2JPNTOK'10'); /* '1' Instituto de Fisica */ /* '2' Center for Nuclear Study */ /* '3' Department of Theoretical Physics, Research School of Physical Science and Engineering */ /* '4' Institute for Molecular Science, Okazaki */ /* '5' Institute of Particle and Nuclear Studies */ /* '6' Physics Department */ /* '7' Cyclotron and Radioisotope Center */ /* '10' Department of Physics */ REF=(PR/C'11', RBF'12'); VLP=(67(2003)064601'11', 33(2003)263'12'); /* '12' V.Guimaraes et al., Proceedings of the XXV Workshop on Nuclear Physics in Brazil (Sao Pedro, 2002) */ RCTS=14N(3HE,6HE)11N; PHQS=(ENGY-SPEC'13', RESN-ENGY'14', ANGL-DSTRN, OPT-POTL-PARA); /* '13' 6He energy spectra */ /* '14' Energy above the 10C+p threshold (decay energy) of the 11N reasonance */ /*===================================================================*/ /* Experimental Conditions */ /*===================================================================*/ \\EXP,1; /* 2003-10-03 : Compiled */ RTY=PKUP; ENR=99.95%; CHM=ELM; PHYS-FORM=GAS; THK-TGT=XMG/CM**2'15'; /* '15' 14N2 gas target filled to a pressure of about 21 cm Hg */ POL-TGT=0%; ALGN-TGT=0%; ACC=CYC; INST-ACC=2JPNTOK'16'; /* '16' Center for Nuclear Study */ INC-ENGY-LAB=73.40MEV; ERS-PRJ=0.05MEV; BEAM-INTNSTY=[0.5UA; POL-PRJ=0%; DET-PARTCL=6HE; COINC=NO; ANT-COINC=NO; DET-SYS=(MAG'17',PROP-CNTR'18',SCT'19',TOF'20',EDE'21'); /* '17' QDD type spectrograph to analyze 6He and other products /* '18' Gas proportinal counter to detect reaction products and measure energy loss */ /* '19' To measure energy and time-of-flight */ /* '20' ToF was obtained from the time interval between cyclotron-rf and fast signal from plastic scintillator. */ /* '21' E and Delta E are obtained from plastic scintillator and proportional counter. */ ERS-DET=[200KEV'22'; /* '22' FWHM */ CALB-DET=/ The known states of 21Mg from 24Mg(3He,6He)21Mg is used for energy calibration. /; /* Experimental Method: - Time-of-flight (ToF was obtained from the time interval between cyclotron-rf and fast signal from plastic scintillator.) - Particle identification by 'E/Delta E' measurement (E and Delta E are obtained from plastic scintillator and proportional counter.) RCT=14N(3HE,6HE)11N; PHQ=ENGY-SPEC'23'; /* '23' 6He energy spectra */ ANL=RMTRX-THEORY; /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,1; INC-ENGY-LAB=73.40MEV; RSD=11N; THTL=6.8DEG; /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; EXC-ENGY'24' DSIGMA/DOMEGA/DE DELTA-DSIGMA/DOMEGA/DE'25' (MEV) (NB/SR/MEV) (NB/SR/MEV) 0.000 0. +-0.0 0.100 0. +-0.0 0.200 0. +-0.0 0.300 4. +-4.06 0.400 7. +-5.21 0.500 15. +-7.97 0.600 7. +-5.49 0.700 14. +-7.50 0.800 15. +-7.84 0.900 15. +-7.92 1.000 19. +-8.79 1.100 11. +-6.64 1.200 31. +-11.33 1.300 37. +-12.43 1.400 70. +-17.04 1.500 45. +-13.59 1.600 60. +-15.77 1.700 61. +-15.87 1.800 97. +-20.09 1.900 85. +-18.75 2.000 157. +-25.53 2.100 216. +-29.91 2.200 140. +-24.08 2.300 170. +-26.53 2.400 207. +-29.28 2.500 234. +-31.13 2.600 188. +-27.94 2.700 175. +-26.96 2.800 143. +-24.35 2.900 143. +-24.36 3.000 124. +-22.68 3.100 100. +-20.39 3.200 105. +-20.91 3.300 116. +-21.97 3.400 115. +-21.87 3.500 162. +-25.91 3.600 160. +-25.79 3.700 181. +-27.41 3.800 183. +-27.58 3.900 187. +-27.88 4.000 193. +-28.27 4.100 186. +-27.78 4.200 272. +-33.60 4.300 351. +-38.16 4.400 466. +-43.98 4.500 596. +-49.71 4.600 541. +-47.37 4.700 390. +-40.21 4.800 347. +-37.92 4.900 312. +-35.99 5.000 375. +-39.43 5.100 267. +-33.27 5.200 244. +-31.81 5.300 427. +-42.09 5.400 485. +-44.84 5.500 494. +-45.26 5.600 393. +-40.40 5.700 464. +-43.89 5.800 533. +-47.01 5.900 635. +-51.35 6.000 713. +-54.37 6.100 709. +-54.25 6.200 679. +-53.07 6.300 566. +-48.44 6.400 445. +-42.97 6.500 475. +-44.41 6.600 503. +-45.68 6.700 544. +-47.49 6.800 564. +-48.35 6.900 454. +-43.40 7.000 407. +-41.09 7.100 448. +-43.11 7.200 372. +-39.31 7.300 370. +-39.16 7.400 382. +-39.79 7.500 386. +-40.01 \END; /*===================================================================*/ |