6th China-Japan Joint Nuclear Physics Symposium

1
6th China-Japan Joint Nuclear Physics Symposium
May 16-20, 2006, Shanghai
Chinese
Japanese Subjects A.
Dripline Nuclei 53
B. Nuclear Astrophysics 14
C. Super-Heavy Elements
42 D. Hyper Nuclei
02 E. High
Spin States 22
F. Nuclear Structure 66
G. Heavy Ion Reaction
61 H. Instrumentations,
55
Applications, Accelerator projects
I. Hadron Physics and QGP 73 5 days,
64 talks discussion session
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I have participated all the Japan-China
symposiums except the first one. 1. 2nd
China-Japan Joint Nuclear Physics Symposium on
Recent Topics of Nuclear Physics, Beijing
(China), August 29 September 2,
1994. Talk Study of Nuclear Structure and
Collisions with Antisymmetrized
Molecular Dynamics . 2. 3rd Japan-China Joint
Nuclear Physics Symposium, Sendai and Niigata
(Japan), July 24 29, 1997.
Organizing Comm.. 3. 4th China-Japan Joint
Nuclear Physics Symposium, Lanzhou (China),
July 31 August 2, 2000. Organizing
Comm., Talk Clustering in
Neutron-Rich Nuclei ? 4. 5th Japan-China Joint
Nuclear Physics Symposium, Fukuoka (Japan),
March 710 , 2004. Organizing Comm.,
Session-Chair.
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Chinese talkers in middle generation (30s and
40s) have increased in number. 10 years ago,
Profs. Yu-Gang Ma and Jie Meng were really young
, and Prof. Bao-An Li was working hard in US as
a postdoc. Almost no people older than them up
to 50s. Now, professors in the same generation
as Prof. Ma are leading the nuclear physics
communinity of China, and the activity of it is
now supported by many young scientists.
Maybe, the number of talks this time is the
largest in this series of symposia. This time
the symposium is for 5 days, one day longer than
previous ones. It is partly due to the inclusion
of the new subject quark hadron physics , but
mainly it reflects the increased young
activities mainly in the Chinese side.
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The umbalance of the number of talkers from China
and Japan for the same subject does not
necessarily reflect the umbalance of the number
of the actual scientists for that subject.
This problem has been present from early time
but for me it seems to be reduced this time.
My talk is not a summary talk of the 64
talks given here. My talk is to give a
concluding ramarks and so my stress may be larger
on some selected number of talks, but it does
not mean that the others are not worth mentioning
with stress.
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• Dripline Nuclei
• A. Ozawa reaction cross sections of
  unstable nuclei
• matter distribution neutron halo and
  skin
• 14-19C, 14Be and 14,15B at RIBLL
  (IMP) strong collaboration with China
• T. Nakamura invariant-mass spectroscopy of
  neutron halo nuclei
• resolution of discrepancies among three
  Lab.s. 11Li 9Li di-neutron
• di-neutron condensation ? HFB
• K. Matsuta nuclear moments of mirror
  pairs
  
  
• large isoscalar ltsgt for T3/2 (9C,
  9Li) no theory reproduced it
• µ, ß-ft value ? ltSpgt, ltSngt, ltlpgt, ltlngt
  
• Kun Wang 23Al and neighboring nuclei
  (RIKEN)
• sR and momentum distribution
  dominant d-wave
• Cui-E Wu 17C 1n, 2n, 3n removal s
  (RIKEN) 16C(2)d5/2 ?

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Experimental data by Nakamura
K.Hagino and H.Sagawa, Phys.Rev.C 72, 044321
(2005).

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HFB calculation
M.Matsuo et al.
8
Shu-Wei Xu near proton dripline in
rare-earth region, ßdelayed p-decay Fu-Rong
Xu Skyrme HF for N7 isotones ? large
deformation 9He
deformed ? Variety of studies for dripline
nuclei sR , removal s breakup
reactions magnetic moments decay
dilute nuclear matter as halo and skin
strongly correlated structures ?
di-neutron cluster not ordinary cluster,

existent by Borromean effect
very fragile
cluster
BCS-BEC cross-over
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B. Nuclear Astrophysics S. Kubono
experimental study of stellar reactions at CNS
review talk direct approach with
low-energy RIB to stellar reactions
SHARAQ PA CRIB ( review od CNS by Kubono
and Shimoura ) K. Sumiyoshi
core-collapse supernovae, neutron stars, black
holes, and
unstable nuclei from nuclear
structure to macroscopic astrophysics
Shen-EOS EOS table constrained by unstable
nuclear data K281, Asym36.9 H.
Utsunomiya photo-nuclear reactions in
astrophysics 35 n-deficient nuclei
from 74Se to 196Hg ? photonuclear reaction
photodisintegration cross section
measurement at AIST 180Ta K. Sagara
direct measurement of 12C4He
?16O? 10 year preparation with
Kyushu Univ. tandem threshold cluster
states Bing Guo neutron ANC from (d, p)
? proton ANC ? (p, ?)
direct measurement of 11C(p,? )12N at TRIUMF
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Nuclear physics ? astrophysics cross section
measurements and calculations
calculations are also very elaborate and need new
ideas for nuclear structure and
reaction calculations EOS table
constrained by nuclear data including unstable
nuclei density-dependence of symmetry
energy from nucleus-nucleus collisions
Astrophysics ? nuclear physics famous
example Hoyle state in 12C

( Bose condensation of 3 a)


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• Clustering in dilute nuclear matter
• Di-neutron condensation in neutron skin/halo of
  neutron-rich nuclei
• acluster condensation in near-proton-dripline
  nuclei ?
• a cluster condensation in neutron-richer
  nuclei ?

Gas-like states formed by clusters
excitation energy
a condensed state
(Hoyle state)
Bose condensation into lowest orbit
Y. Funaki, A. Tohsaki, H. Horiuchi, P. Schuck, G.
Roepke
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C. Super-Heavy Elements
K. Morimoto synthesis of the heaviest
elements at RIKEN celebrated discovery
of A 113, 2 events until now, 30 fb
GARIS(gas-filled recoil separator)
prospect 283114 - 290117 Y. Nagame
chemical and nuclear studies of the heaviest
elements at JAEA relativistic effects may
cause drastic change of electron configuration
chemistry on atom-at-a-time basis
studies of Rf(Z104) future study of Db in
collaboration with IMP Hu-Shan Xu Heavy
element study at IMP, status and prospects
265Bh, 259Db were synthesized future
collaborations with RIKEN, GSI, Dubna Zhi Qin
preparation of gas-chemistry of Dubnium at
IMP discussion of 259Db and 265Bh
produced at IMP rotatory multi-detector
arrays Feng-Shou Zhang ImQMD for synthesis
of superheavy nuclei shell
correction (deformed two-center shell model) ,
surface energy OO, CaCa
48Ca208Pb, 238U
13
Zhong-Zhou Ren structure and decay of
superheavy nuclei shape
coexistence superdeformation (
deformed ) density-dependent cluster model of
a-decay
14

• D. Hyper Nuclei ( Strangeness Nuclear Physics
  )
• E. Hiyama S-2 hypernuclei 3-body
  and 4-body studies
• a x ?? x n, p, d, t, 3He
  ??force ???6He
• NN?, NN??, a?N, aat? are
  possible to be bound
• M. Iwasaki Kaonic atoms and nuclei
  ?(1405)K- p (Akaishi-Yamazaki) strange
  tribaryon S0(3115)T1 ( K- 4He )atomic
  ? S0(3115) p
• search for isospin partner
  J-PARC
• high density nuclei
  spectroscopy H.I. collisions

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• E. High Spin States
• E. Ideguchi high spin states with stable
  and unstable nuclear beams
• various excitation modes of Z 50
  high spin states of 197I
• deformed structure at high-spin
  states in 48Ca and 50Ti
• M. Matsuzaki wobbling motion of
  superdeformed nuclei
• 1-phonon and 2-phon excitations of
  the wobbling motion were observed
• RPA study of wobbling mode
  quasi-particle alignment effect for rotation
• Sheng-Jiang Zhu high-spin states in
  136,137La, 148Ce, 105Mo
• CIAE La N79,80 weak
  collectivity
• Lawrence-Berkeley Ce (octupole def.) Mo
  (1- and 2-phonon states of ?vib.)
• Sheng-Yu Zhu g-factor of high-spin states
  of 83Y (Z39, N44)
• proton g9/2 alignment followed by
  neutron g9/2 alignment

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• F. Nuclear Structure
• S. Shimoura spectroscopy with RI
• various experimental techniques of
  direct reactions developed for RIB
• several examples such as 12Be(a,a)
  
• SHARAQ high resolution for
  example 3,4n, 6,7H
• A. Tamii spin-flip excitations
  with (p, p) at 0 degree
• Review of RCNP activities very
  high resolution
• K. Sekiguchi three-nucleon force
• in ab-initio structure calculations,
  3N force is very important
• spin observables
• H. Toki chiral mean-field
  model for finite nuclei
• chiral symmetry, role of pion,
  parity-charge-violated mean field
• T. Nakatsukasa nuclear dynamics with
  time-dependent description
• novel approach to nuclear structure
  and reaction

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Y. Utsuno large-scale shell model
calculation disappearance of magic
number, correlation energynarrowing shell gap,
monopole interaction due to tensor
force Zhong-Yu Ma giant and pygmy
resonances RMF, RRPA, proper
treatment of resonant continuum,
incompressibility and symmetry energy You-Bao
Wang ßdecay of n-rich 114-118Pd , 116-120Cd
shape-transition region
IGISOL(Jyvaskyla) 5 levels of 3-phonon states
in Cd isotopes Jin-Dong Bao friction effect
on neutron emission in fission Langevin
equation for fission Yu-Min Zhao shell
model with random interactions
regularities by random interactions,
spin zero dominance in ground states,
collectivity
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Jie Meng time-odd triaxial relativistic
mean field light odd-mass nuclei
near double closed shell µmoments Shan-Gui
Zhou deformed HFB for exotic nuclei
Woods-Saxon base
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G. Heavy Ion Reaction
K. Hagino large-angle quasi elastic
fusion barrier distribution Dfus(E)
d2(Esfus)/dE2 quasi-elastic barrier
distribution Dqe(E) d(sqe(E, p)/sR(E, p))/dE
Dqe(E) is suitable for unstable nuclei
Zu-Hua Liu exp. study of Dfus(E), Del(E)
and Dqe(E) Legnaro 48Ca (32S) 90,96Zr
CIAE 6,7Li 208Pb Bao-An Li
from earth to heaven EOS of n-rich
matter, density deoendence of symmetry energy
isospin and momentum dependent transport
eq. masses and radii of netron stars are
studied by using heavy-ion collision
data analyses Zhu-Xia Li elliptic flow of H
and He at medium high energies ImQMD05,
excitation function of elliptic flow, soft
EOS
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Yu-Gang Ma coalescence and scaling of
elliptic flow anisotropic flows of
clusters isospin-dependent QMD 86Kr
124Sn nucleon-number scaling for
anisotropic flow and momentum-space density
can be understood by coalescence
mechanism Jian-Song Wang size,
temperature, and n/p ratio of initial interaction
zone are derived from detected
neutron and charged particle multiplicities
measure of impact parameters and number of
participant nucleons
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• H. Instrumentations, Applications, Accelerator
  Projects
• M. Wada slow RI beam at RIKEN RIBF
• SLOWRI universal slow RIB facility
• S. Jeong diffusion exp. with
  short-lived radiotracer 8Li
• TRIAC ( RI
  accelerator complex at JAEA )
• H. Sakurai physics opportunities at
  RIKEN RIBF
• review (RIBF) Phase-I, Phase-II
  (SHARAQ, SAMURAI, SLOWRI, ...... )
• T. Nagae physics programs at J-PARC
• review (J-PARC) strangeness nucl.
  Phys. (S-1, -2 hyper nuclei)
• T. Hotta laser electron photon exp.
  at SPring-8
• review (LEPS) pentaquark T
  CLAS(Jlab) vs LEPS
• LEPS2 ( new beam line project )
• Jin-Gen Chen/ status report on SLEGS
  early stage of construction

22
Xin Dong time of flight detector for
RHIC/STAR MRPC TOF Guo-Qing Xiao
status of CSR and RIB lines IMP CSR
(cooling storage ring) CSRm 2.8 GeV
(p), 1.1 GeV/A (12C), 520 MeV/A ( U72 )
CSRe, RIBLL1, RIBLL2 Zhi-Gang Xiao
programs at HIRFL-CSRm internal
and external target exp. Hplus ( hadron quark
physics ) Wei-Ping Liu physics programs at
CIAE
nuclear astrophysics,
BRIF project proton cyclotron,
ISOL, superconducting LINAC
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• I. Hadron Physics and QGP
• A. Hosaka photo productions of baryon
  resonances and pentaquarks
• ? N ? K Y , Y ?(1520) or
  pentaquark(T)
• difference between LEPS and Jlab exp.
  conditions
• Y. Miake azimuthal anisotropy and
  QGP
• early stage of collisions
• T. Hirano perfect fluidity of QGP ?
• azimuthal anisotropy (elliptic flow) ,
  is perfect fluidity discovered or not ?
• Peng-Fei Zhuang strongly coupled
  quark-meson-diquark plasma
• Jin-Hui Chen F-meson and strange quark
  dynamics
• Lie-Wen Chen dynamical quark-coalescence
  for Fand O production at RHIC
• Fan Wang lattice study of QCD vacuum

24
Bing-Song Zou pentaquark components in baryons

Qun Wang neutrino emission in color
superconducting quark matter Wei-Zhou Jiang
magnetic susceptibility of collapsed stars in
hadron and quak
phases
25
We heard in many talks about strong
collaborations of Japan and China scientists
for example exp. RIKEN and
IMP theor. Shen-EOS
China-Japan symposium series have contributed to
it largely We also heard about some future
possible collaborations of China and Japan
scientists for example SHE (
IMP and RIKEN)
in both nuclear physics and nuclear
chemistry sides We had a discussion session
nicely chaired by Toki-san about the China-Japan
collaborations Sakurai-san, Ye-san, and Ren-san
gave us nice review of the present situation of
China-Japan collaborations up to now and also
future possible collaborations.
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Sakurai-san
Q1 Research collaboration with Chinese
researchers for last 5 years?
subject collaboration budget
proton resonance scattering CIAE
CNS China total reaction cross section
IMP-Niigata RIKEN nuclear theory PKU-RCNP
Jpn.Gov. (students) ???-RCNP Jpn.
Grad-in-Aid PKU-RCNP JSPS nuclear data
group Hokkaido through IAEA AMS CIAE-Tsukuba
Tsukuba-Univ. science on short lived
isotopes CIAE-Osaka JSPS-NSFC CIAE-Osaka MEX
T Atomic E. RIB physics IMP-RIKEN RIKEN PK
U-RIKEN RIKEN
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Sakurai-san
Q2 Accept Chinese post-doctoral fellows for last
5 years?
Univ./Inst. number of fellows budget CNS 3 JSPS
1 CNS JAEA 1 JSPS 3 MEXT
Atomic-E. KEK 1 JSPS RIKEN RIKEN
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Ye-san
Proposed Experimental Collaboration from China
Side
Cooperation on facility development
Possible participation of experiments with
Big-RIPS and CSR complex Possible
participation of experiment with RIPS and
HIRFL-RIBLL Possible participation of
experiments with CRIB and GIRAFFE
Possible cooperation on the research for
superheavy nuclei Possible cooperation on
Photonuclear physics Possible cooperation on
detection technology
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Summary (1)
Ren-san

• China side we had good collaboration.
• Possible work for future collaboration
• Visits among physicists with common interests
• Participations of related conferences in Japan
• Theoretical work for experiments in Japan
• Support each other on researches (Referee)
• I, as a referee of international journal,
  suggested the citation of Japaneses article.

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What we have to do
Toki-san

• China-Japan symposium
  
• China Nuclear Physics summer school existing
• CNS summer school
• JPS meeting ( then CPS meeting )
• Council for collaboration

lets start now
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Big machines in Japan (RIBF, J-PARC) and in
China (Lanzhou, Beijing, Shanghai) are now with
world-leading scale.
Roles of China and Japan in the international
community of nuclear physics have now become
very large, which implies the collaboration of
two neighboring countries in asia has become far
more important than before. ( like
collaborations among European countries )
We can expect that the collaborations are with
researches of world-leading level which are
conducted by young scientists.
32
Summary
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??????

??????? ?? ?? ????????? ??????? ?? ??
??????? ??????? ??? ?? ?????? ???????
???? ?? ??????

For us at this symposium, these sound like to
imply as follows Successive young
generations never cease to progress While
nature looks to be ever similar But nature
always sends to us its deep contents And
waits for young people to elucidate them
Yangtze River near Shanghai in spring
evening with flowers and moon
33
Thanks to Chinese organizers Prof.
Yu-Gang Ma and other executive committee
members and also many young people who
even met the Japanese participants at
the airport. and also to Japanese
coordinator Prof. A. Ozawa and
also to the hospitality of Chinese friends
34
(No Transcript)
35
Special thanks go to

• Prof. Xiangzhou Cai
• Mr. Kun Wang
• Ms. Jing Dai
• Many students staffs in our group
• J. H. Chen. J. G. Chen, G.L. Ma, S. Zhang,
  X.H. Shi, T. Z. Yan, E. J. Ma, D. X. Niu, C.
  Zhong, J.L. Long, W. Guo, W. D. Tian et al