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1、CompanyLOGOQuest for chirality in 107AgHe Chuangye第十三届全国核结构研讨会 赤峰 2010.7.25-31outlineIntroductionExperiment and resultsDiscussionconclusion134Pr, 2006, D. TonevLifetime measurementNot typical chiral bandsCs, La, Pr, Pm, Eu. Odd-odd nucleiMore than 20 expmplesin A130 mass regionIntroductionA110 mass
2、regionOdd-odd Tc,Rh,Ag6 examplespgg/2nh11/2Hole state: pg9/2Introduction2006Y, 106Ag 11B+100Mo CIAEJoshi P et al., PRL, 2007, 98: 102501Not good chiral bands107AgIntreasting caseGood candidate of chirality?Previous experimental results of 107AgCompany LogoDan Jerrestam et al., 94Zr(17O,1p3n)107Ag, N
3、ucl.Phys.A 577 (1994) 786-812 80 MeV100Mo(11B,4n)107AgCIAE, HI-13 Tandem accelerator100Mo1.57mg/cm2， Au 8.03mg/cm2 Experiment details of 107AgBeam energy :60 MeV Beam energy :60 MeV Company LGamma Detection Array in CIAE: 10 HPGe-BGOs, 2 planar and 1 Clover detector Experimental results-Total Projec
4、tionCompany LogoTotal projectionGate by 312keV 2108 - eventsE-E and DCO ratio matrix865106210951307312107AgExperimental results -Intensity and DCO ratioTotal efficencyEfficency at 37Efficency at 90New level scheme of 107AgDiscussionCompany LogoPHYSICAL REVIEW C 76, 024307 (2007)105Ag107AgDiscussion-
5、 woods saxon nilsson diagramCompany LogoprotonneutronDiscussion105Ag TAC: 20.19 24A. Y. Deo et al.,Phys.Rev.C 73, 034313 (2006)105Rh TRS J. A. Alcntara-Nez et al.,Phys.Rev.C 69, 024317 (2004)Discussion104Rh: PRL.92(2004),032501Near degeneracy level energyS(I) smooth changing with spin；staggering in
6、the B(M1)/B(E2) ratiosIdentical or similar AlignmentMoment of inertia DiscussionDiscussionNear degneracy level energyS(I) smooth changing with IStaggering in B(M1)/B(E2)Band 3 and Band 3 and band 4 in band 4 in 107107Ag Ag are suggested are suggested as chiral bandsas chiral bandsSimilar aligned ang
7、ular momentaClose in moment of inertiaConclusion vA new level scheme of 107Ag are establishedvBand 3 and band 4 are suggested as chiral bandsCompanyLOGOHappy New Year!vPHYSICAL REVIEW C 76, 024307 (2007)PHYSICAL REVIEW C 76, 024307 (2007)105AgCompany L+1-1-1+1+1+1+1-1-1-1I+4I+3I+2I+1IT. Koike, K. Starosta, and I. Hamamoto, Phys. Rev. Lett. 93, 172502 (2004)
