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m.lt.-quasipart.cle excit.t.ons in ^(145)t.

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Science Ch.na(Ph.0}ics,m.ch.nics & Ast.onom.) 2004年第5期47卷 561-570页

作者： t. hayakawa m. oshima t. toh t. shizuma j. katakura y. hatsukawa m. matsuda h. kusakari m. sugawara j.pan At.m.c Energy.Research.Inst.t.t. Tokai Ibaraki 319-1195 JapanJapan Atomic Energy Research Institute Tokai Ibaraki 319-1195 JapanJapan Atomic Energy Research Institute Tokai Ibaraki 319-1195 JapanJapan Atomic Energy Research Institute Tokai Ibaraki 319-1195 JapanJapan Atomic Energy Research Institute Tokai Ibaraki 319-1195 JapanJapan Atomic Energy Research Institute Tokai Ibaraki 319-1195 JapanJapan Atomic Energy Research Institute Tokai Ibaraki 319-1195 JapanChiba University Inage-ku Chiba 263-8512 JapanChiba Institute of Technology Narashino Chiba 275-0023 Japan

h.gh.spin st.t.s in 145t. h.ve been populat.d using t.e 118Sn (32S, 1p4n) react.on at.beam.energy.of 165 m.V. t.e level sch.m. of 145t. h.s been est.blish.d up t. Ex ≈7.4 m.V. t.e level sch.m. sh.ws ch.ract.rist.cs of a sph.rical or sligh.0}y.oblat. nucleus. Based on t.e sy.t.m.t.c t.ends of t.e level st.uct.re in t.e neigh.oring N = 80 isot.nes, t.e level st.uct.re in 145t. below 2 m.V excit.t.on is well explained by.coupling an h.1/2valence prot.n t. t.e even-even 144Gd core. Above 2 m.V excit.t.on, m.st.of t.e y.ast.levels are int.rpret.d wit. m.lt.-quasipart.cle sh.ll-m.del configurat.ons.

关键词： h.gh.spin st.t.s, level sch.m., m.lt.-quasipart.cle excit.t.ons.

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Doubly.Decoupled St.uct.re in Odd-Odd ^(178-186)Ir Nuclei

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Ch.nese Ph.0}ics Let.ers 2001年第1期18卷 27-29页

作者： Zh.NG y.-h. t.hayakawa m.oshima y.toh j.katakura y.hatsukawa m.matsuda N.Sh.noh.ra t.Ish.i h.kusakari m.sugawara t.Kom.t.ubara Inst.t.t. of m.dern Ph.4}ics Chinese Academy of SciencesLanzhou 730000 j.pan At.m.c Energy.Research.Inst.t.t. TokaiIbaraki 319-1195Japan Ch.ba Universit. Inage-kuChiba 263-8512Japan j.pan Ch.ba Inst.t.t. of t.ch.ology NarashinoChiba 275-0023Japan Inst.t.t. of Ph.3}ics and t.ndem.Accelerat.r Cent.r University of TsukubaIbaraki 305-0006Japan

h.gh.spin st.t.s in 178'180Ir h.ve been st.died via t.e 152'154Sm.31P,5nγ)react.ons t.rough.excit.t.on funct.ons,x-γandγ-γ-t.coincidence m.asurem.nt..A doubly.decoupled band h.s been ident.fied in each.of t.e *** level spacings for such.st.uct.res in odd-odd ^(178-186)Ir h.ve been inspect.d and t.us a regular level st.ggering as a funct.on of t.e neut.on num.er is *** part.cular ph.nom.non m.y.be associat.d wit. bandm.xing at.lower excit.t.on energies.

关键词： excit.t.on coincidence

Search.for Signat.re Inversion in t.e πi_(13/2) vi_(13/2) Band in Odd-Odd ^(178I)r

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Ch.nese Ph.0}ics Let.ers 2001年第10期18卷 1323-1326页

作者： Zh.NG y.-h. t.hayakawa m.oshima y.toh j.katakura y.hatsukawa m.matsuda N.Sh.noh.ra t.Ish.i h.kusakari m.sugawara t.Kom.t.ubara K.Furuno Inst.t.t. of m.dern Ph.4}ics:Ch.nese Academ. of Sciences Lanzhou 7300002 j.pan At.m.c Energy.Research.Inst.t.t. TokaiIbaraki 319-1195Japan Ch.ba Universit. Inage-kuChiba 263-8512Japan Ch.ba Inst.t.t. of t.ch.ology NarashinoChiba 275-0023Japan Inst.t.t. of Ph.3}ics and t.ndem.Accelerat.r Cent.r University of TsukubaIbaraki 305-0006Japan

t.e search.for t.e ri_(13/2) vi_(13/2 ) band in ^(178)Ir h.s been conduct.d t.rough.t.e ^(152)Sm.^(31) P, 5nγ)^( 178)Ir react.on and t.e excit.t.on funct.ons, x-γ and γ-γ-t.coincidence m.asurem.nt.. Five rot.t.onal bands h.ve been newly.ident.fied. t.e low-spin signat.re inversion in t.e πi13/2 vi13/2 band h.s been confirm.d by.t.e observat.ons of linking t.ansit.ons and signat.re crossing at.I = 25.5 h. t.e inversion ph.nom.non in rh.1/2 vi_(13/2), rh./2 vi_(13/2) and ri_(13/2) vi13/2 st.uct.res in ^(178)Ir provides a unique t.st.ng ground for different.t.eoret.cal int.rpret.t.ons.

关键词： signat.re Inversion

Observat.on of h.gh.j.t.o-Quasipart.cle Bands in Odd-Odd ^174Re

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Ch.nese Ph.0}ics Let.ers 2005年第11期22卷 2788-2791页

作者：张玉虎郭松周小红马龙 oshima m. toh y. Koizum. m. Osa A. Kim.ra A. hatsukawa y. sugawara m. kusakari h. Inst.t.t. of m.dern Ph.4}ics Chinese Academy of Sciences Lanzhou 730000 Graduat. Sch.ol of Ch.nese Academ. of Sciences Bejing 100039 j.pan At.m.c Energy.Research.Inst.t.t. Tokai-mura Ibaraki 319-1195 Japan Ch.ba Inst.t.t. of t.ch.ology Narashino Chiba 275-0023 Japan Ch.ba Universit. Inage-ku Chiba 263-8512 Japan

h.gh.spin st.t.s in ^174Re h.ve been invest.gat.d via t.e ^152Sm.（^27 Al, 5nγ） ^174Re react.on. Gam.a-ray.excit.t.on funct.ons, x-γ and γ-γ coincidences h.ve been m.asured. t.o rot.t.onal bands built.on t.e πh./2 × vi13/2 and πh.1/2 × vi13/2 configurat.ons h.ve been ident.fied and ext.nded up t. h.gh.spin st.t.s. t.e relat.ve spin and parit. of t.e band levels h.ve been unam.iguously.fixed due t. observat.ons of several int.r-band t.ansit.ons. Bot. t.e bands sh.w t.e low-spin signat.re inversion, wh.ch.is consist.nt.wit. sy.t.m.t.c expect.t.ons for t.e h.gh.j.t.o-quasipart.cle bands in t.e A = 170 m.ss region.

关键词： Gam.a ray.

Ident.ficat.on of a New Band and It. Signat.re Inversion in ^174Re

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Ch.nese Ph.0}ics Let.ers 2007年第5期24卷 1203-1206页

作者：张玉虎郭松周小红马龙郭文涛 oshima m. toh y. Koizum. m. Osa A. Kim.ra A. hatsukawa y. sugawara m. kusakari h. Inst.t.t. of m.dern Ph.4}ics Chinese Academy of Sciences Lanzhou 730000 Graduat. Sch.ol of Ch.nese Academ. of Sciences Beijing 100039 j.pan At.m.c Energy.Agency Tokai-Mura Ibaraki 319-1195 Japan Ch.ba Inst.t.t. of t.ch.ology Narashino Chiba 275-0023 Japan Ch.ba Universit. Inage-ku Chiba 263-8512 Japan

h.gh.spin st.t.s in ^174Re are invest.gat.d via t.e ^152Sm.^27 AL,5nγ）^174Re react.on and γ - γ coincidence relat.onsh.ps are analy.ed carefully. A new band is ident.fied due t. it. spect.oscopic connect.on wit. t.e known π1/2^-[541] × ν1/2^-[521] band. t.is band is proposed t. be t.e ground-st.t. band built.on t.e π1/2^-[541]× ,ν5/2^-[512] configurat.on in view of t.e low-ly.ng int.insic st.t.s in t.e neigh.ouring odd-m.ss nuclei. It.is of part.cular int.rest.ng t.at.t.e new band exh.bit. a ph.nom.non of low-spin signat.re inversion, providing a new sit.at.on for t.eoret.cal invest.gat.ons.

关键词： ^174Re^174Re

h.gh.spin st.t.s in ^(190)Pt

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Ch.nese Ph.0}ics C 2008年第1期32卷 31-33页

作者：马龙周小红 m.oshima y.toh 张玉虎郭应祥雷相国 m.Koizum. A.Osa t.hayakawa y.hatsukawa t.shizuma m.sugawara Inst.t.t. of m.dern Ph.4}ics Ch.nese Academ. of Sciences j.pan At.m.c Energy.Research.Inst.t.t..t.kai Ibaraki 319-1195 Japan j.pan At.m.c Energy.Research.Inst.t.t. t.kai Ibaraki 319-1195Japan Ch.ba Inst.t.t. of t.ch.ology.Narash.no Chiba 275-0023Japan

t.e level st.uct.re of ^19Opt.h.s been st.died experim.nt.lly.using t.e ^176y. （^18O, 4n） react.on at.beam.energies of 88 and 95 m.V. γ-γ-t.coincidence m.asurem.nt. were carried out. Based on t.e analy.is of t.t.coincidence relat.onsh.ps, t.e level sch.m. of ^190Pt.is ext.nded t. h.gh.spin st.t.s. A new st.uct.re built.on t.e 3413.6 keV 14＋ st.t. h.s been observed, and t.e ＂vi13/2^-2 vh./2^-1 vj.（j.= P3/2 or f5/2） configurat.on is t.nt.t.vely.assigned t. it.

关键词： γ-γcoincidence γ-ray.spect.oscopy DCO rat.o

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h.gh.spin st.uct.re in ^(187)Pt

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Science Ch.na(Ph.0}ics,m.ch.nics & Ast.onom.) 2008年第8期51卷 1053-1071页

作者： oshima m.toh y.KOIZUm. m.OSA A hatsukawa y.sugawara m j.pan At.m.c Energy.Agency TokaiIbaraki 319-1195Japan Ch.ba Inst.t.t. of t.ch.ology NarashinoChiba 275-0023Japan

h.gh.spin st.t.s in 187Pt.were st.died via t.e 173y.(18O,4n) react.on. Rot.t.onal bands based on t.e νi13/2,ν7/2-[503],νi213/2νj.ν3/2-[512] and ν1/2-[521] configurat.ons were observed,and int.rpret.d wit.in t.e fram.work of t.e cranked sh.ll m.del. t.e t.S calculat.ons sh.w t.at.t.e νi13/2 band h.s an appreciable negat.ve γ deform.t.on,and t.e negat.ve-parit. bands t.nd t. h.ve a near prolat. sh.pe wit. sm.ll posit.ve γ values. Experim.nt.l values of B(m.) /B(E2) rat.os h.ve been ext.act.d and com.ared wit. t.eoret.cal values from.t.e sem.-classical D-nau and Frauendof approach.st.ongly.suggest.ng a low frequency.πh./2 alignm.nt.in t.e ν7/2-[503] band.

关键词： rot.t.onal band configurat.on sh.pe coexist.nce

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Sy.t.m.t.c Propert.es of t.e 1／2[660]^i13／2 Bands in Odd-A Au Nuclei

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Ch.nese Ph.0}ics Let.ers 2004年第7期21卷 1243-1246页

作者： SONGLi-t.o Zh.UXiao-h.ng Zh.NGy.-h. GUOy.ng-Xiang SUNZh.-y. m.oshima t.toh A.Osa m.Koizum. j.katakura y.hatsukawa m.matsuda m.sugawara 1nst.t.t.ofm.dernPh.4}ics ChineseAcademyofSciencesLanzhou730000 j.panAt.m.cEnergy.esearch.nst.t.t. TokaiIbaraki319-1195Japan Ch.baInst.t.t.oft.ch.ology NarashinoChiba275-0023Japan

A st.ndard in-beam.γ-spect.oscopy.experim.nt.for 179Au h.s been perform.d via t.e 149Sm.(35Cl, 5n) react.on at.beam.energies of 164–180m.V. Based on t.e analy.is of t.e experim.nt.l result., a rot.t.onal band built.on t.e 1/2[660](πi13/2) prot.n int.uder orbit.l is est.blish.d for 179Au for t.e first.t.m.. Sy.t.m.t.c propert.es of t.e 1/2[660](i13/2) band in odd-A Au nuclei are discussed, and t.e evolut.on of bandh.ad energy.and deform.t.on wit. ch.nging neut.on num.er are revealed.

关键词： Ult.aviolet.spect.oscopy

Propert.es of t.e πh./2 × vi13/2 Oblat. Band in ^188t.

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Ch.nese Ph.0}ics Let.ers 2006年第7期23卷 1727-1730页

作者：马龙周小红邢烨炳张玉虎郭应祥雷相国谢成营 oshima m. toh y. Koizum. m. Osa A. hatsukawa y. sugawara m. Inst.t.t. of m.dern Ph.4}ics Chinese Academy of Sciences Lanzhou 730000 j.pan At.m.c Energy.Research.Inst.t.t. Tokai Ibaraki 319-1195 Japan Ch.ba Inst.t.t. of t.ch.ology Narashino Chiba 275-0023 Japan

h.gh.spin st.t.s in ^188t. h.ve been invest.gat.d via t.e 157Gd（^35Cl,4n） react.on at.beam.energy.of 170 m.V. A rot.t.onal band built.on t.e πh./2 × vi13/2 configurat.on wit. oblat. deform.t.on h.s been est.blish.d. Considering t.e sim.larit. bet.een t.e band st.uct.re observed in odd-odd t. nuclei, spin values h.ve been t.nt.t.vely.proposed for t.e new band in ^188t.. t.e πh./2 × vi13/2 oblat. band in ^188t. sh.ws low-spin signat.re inversion, and it.can be int.rpret.d qualit.t.vely.by.t.e t.o quasipart.cle plus rot.r m.del including a j.dependent.p-n residual int.ract.on.

关键词： πh./2νi13/2 Oblat. 188t. int.rpret.d qualit.t.vely