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Ikuko Hamamoto
professor emeritus at LU (and adjoint professor at the Niels Bohr Institute, University of Copenhagen, Denmark, for 2002-2012)
Mathematical Physics
Lund Institute of Technology
P.O. Box 118
S-221 00 Lund
+46 46 222 9085
+46 46 222 4416
Ikuko.Hamamoto@matfys.lth.se
Research interests

Theoretical Nuclear Physics:
All aspects of nuclear structure as a quantum mechanical many-body system, which also includes metal cluster physics. Examples are : Shape vibrations, compression modes and various kinds of giant resonances. Shell-structure and nuclear shape. Nuclear beta-decay and charge exchange modes. Pair correlations, especially in connection with the structure of rotating nuclei and drip line nuclei. Anharmonicity of nuclear collective motion. Particle-vibration coupling. Core polarization phenomena. Nuclear high angular momentum phenomena. Exotic deformations such as octupole deformation, superdeformation and triaxial quadrupole deformation. Wobbling motion and chiral bands. Dynamics of nuclei far from beta-stability lines. Isospin impurities.

Publications in international journals with referee system (since 1995) :

Isospin impurities in ground states of N=Z nuclei near the proton drip line
J.Dobaczewski and I.Hamamoto, Phys.Lett. B345 (1995) 181.

Delta-I=4 structure in superdeformed rotational band - Deformation with C4v symmetry
I.Hamamoto and B.Mottelson, Physica Scr. T56 (1995) 27.

Dependence of Gamow-Teller beta(+) decay of 80Zr, 76Sr and 72Kr on nuclear shape
I.Hamamoto and X.Z.Zhang, Zeit.f.Phys. A353 (1995) 145.

Gamow-Teller beta(+) decay of deformed nuclei near proton drip line
F.Frisk, I.Hamamoto and X.Z.Zhang, Phys.Rev.C52 (1995) 2468.

Neutron skin of nuclei towards neutron drip line
I.Hamamoto and X.Z.Zhang, Phys.Rev.C52 (1995) R2326.

Single-particle and collective properties of drip line nuclei
I.Hamamoto, H.Sagawa and X.Z.Zhang, Phys.Rev.C53 (1996) 765.

Low energy strength in low-multipole response function of nuclei near neutron drip line
I.Hamamoto and H.Sagawa, Phys.Rev.C53 (1996) R1492.

Core polarization charges of quadrupole transitions in neutron drip line nuclei
I.Hamamoto and H.Sagawa, Phys.Rev.C54 (1996) 2369.

Electric quadrupole polarization charges in proton drip line nuclei
I.Hamamoto and H.Sagawa, Phys. Lett. B394 (1997) 1.

Decay out of the highly-deformed bands in the N=75 isotones 137Sm and 139 Gd
C.Rossi Alvarez, D.R.Napoli, C.M.Petrache, D.Bazzacco, S.Lunardi, N.H.Medina, R.Menegazzo, P.Pavan, R.Venturelli, C.Fahlander and I.Hamamoto, Nucl. Phys. A624 (1997) 225.

Structure of giant quadrupole resonances in neutron drip line nuclei
I.Hamamoto, H.Sagawa and X.Z.Zhang, Phys. Rev. C55 (1997) 2361.

Quadrupole strength function and core polarization in drip line nuclei
I.Hamamoto, H.Sagawa and X.Z.Zhang, Nucl. Phys. A626 (1997) 669.

Giant monopole resonances in nuclei near stable and drip lines
I.Hamamoto, H.Sagawa and X.Z.Zhang, Phys. Rev. C56 (1997) 3121.

Isoscalar and isovector dipole mode in drip line nuclei in comparison with beta-stable nuclei
I.Hamamoto, H.Sagawa and X.Z.Zhang, Phys. Rev. C57 (1998) R1064.

Collective modes of nuclei far from beta-stability line
I.Hamamoto, H.Sagawa and X.Z.Zhang, J. Phys. G : Nucl. Part. Phys. 24 (1998) 1417.

Giant monopole states in nuclei near drip lines
H.Sagawa, I.Hamamoto and X.Z.Zhang, J. Phys. G : Nucl. Part. Phys. 24 (1998) 1445.

Deformation and one-particle orbits in 71Kr and 71Br
P.Urkedal and I.Hamamoto, Phys. Rev. C58 (1998) R1892.

Coupling of particles near threshold to shape oscillations
I.Hamamoto and X.Z.Zhang, Phys. Rev. C58 (1998) 3388.

Some current topics in nuclear structure
I.Hamamoto, Balkan Physics Letters, Special Issue, 1998, p.70-86.

A microscopic study of giant resonances in nuclei near drip lines
H.Sagawa, I.Hamamoto and X.Z.Zhang, Nucl. Phys. A649 (1999) 319c.

Displacement fields of excited states in stable and neutron drip line nuclei
I.Hamamoto, H.Sagawa and X.Z.Zhang, Nucl. Phys. A648 (1999) 203.

Gamow-Teller beta+ decays of deformed N$\approx$Z Sr isotopes close to the proton drip line
I.Hamamoto, Phys. Rev. C60 (1999) 011305.

Neutron-proton ratio of collective excitations
I.Hamamoto, Phys. Rev. C60 (1999) 031303.

Anharmonicity of giant resonances
I.Hamamoto, Phys. Rev. C60 (1999) 054320.

Response of light drip line nuclei to spin dependent operators
I.Hamamoto and H.Sagawa, Phys. Rev. C60 (1999) 064314.

Polarization associated with the coupling to isoscalar dipole compression mode
I.Hamamoto and B.A.Brown, Phys. Rev. C62 (2000) 024318.

Charge-exchange spin monopole modes
I.Hamamoto and H.Sagawa, Phys. Rev. C62 (2000) 024319.

Search for the wobbling mode built on triaxial super deformation
S.W.Oedegaard, G.B.Hagemann, M.Bergstroem, B.Herskind, D.R.Jensen, G.Sletten, S.Toermaenen, J.Wilson, P.O. Tjoem, K.Spohr, H.Huebel, A.Goergen, G.Schoenwasser, A.Bracco, S.Leoni, A.Maj, C.Petrache, P.Bednarczyk, D.Curien and I.Hamamoto, Nucl. Phys. A682 (2001) 427.

Kinetic energy and spin-orbit splitting in nuclei near neutron drip line
I.Hamamoto, S.V.Lukyanov and X.Z.Zhang, Nucl. Phys. A683 (2001) 255.

Giant resonances of nuclei far from $\beta$ stability lines vs. $\beta$ stable nuclei
I.Hamamoto, Nucl. Phys. A687 (2001) 9.

First evidence for the wobbling mode in nuclei
S.W.Oedegaard, G.B.Hagemann, D.R.Jensen, M.Bergstroem, B.Herskind, G.Sletten, S.Toermaenen, J.Wilson, P.O. Tjoem, I.Hamamoto, K.Spohr, H.Huebel, A.Goergen, G.Schoenwasser, A.Bracco, S.Leoni, A.Maj, C.Petrache, P.Bednarczyk and D.Curien, Phys. Rev. Lett. 86 (2001) 5866.

Shape, shell structure and low-lying strong octupole strength in 60Ca
I.Hamamoto, H.Sagawa and X.Z.Zhang, Phys. Rev. C64 (2001) 024313.

First evidence for the wobbling mode in a triaxial superdeformed odd-A nucleus
I.Hamamoto, S.W.Oedegaard, G.B.Hagemann, D.R.Jensen, M.Bergstroem, B.Herskind, G.Sletten, S.Toermaenen, J.Wilson, P.O. Tjoem, K.Spohr, H.Huebel, A.Goergen, G.Schoenwasser, A.Bracco, S.Leoni, A.Maj, C.Petrache, P.Bednarczyk and D.Curien, Acta Physica Polonica B32 (2001) 2545.

Low-lying appreciable Gamow-Teller strength in deformed neutron-rich nuclei
P.Urkedal, X.Z.Zhang and I.Hamamoto, accepted for publication in Phys.Rev.C64 (2001) 054304.

Properties unique in nuclei far from beta-stability line
I.Hamamoto, European Physical Journal A13 (2002) 21.

Wobbling phonon excitations, coexisting with normal deformed structures in 163Lu
D.R.Jensen, G.B.Hagemann, I.Hamamoto, S.W.Oedegaard, M.Bergstroem, B.Herskind, G.Sletten, S.Toermaenen, J.N.Wilson, P.O. Tjoem, K.Spohr, H.Huebel, A.Goergen, G.Schoenwasser, A.Bracco, S.Leoni, A.Maj, C.Petrache, P.Bednarczyk and D.Curien, Nucl. Phys. A703 (2002) 3.

New aspects of nuclear structure near drip lines
I.Hamamoto and H.Sagawa, Nuclear Physics News, 12 (2002) no.2, 21.

Wobbling excitations in odd-A nuclei with high-j aligned particle
I.Hamamoto, Phys. Rev. C65 (2002) 044305.

Shape, shell structure and collective modes unique to nuclei far from stability line
I.Hamamoto, Suppl. Prog. Theor. Phys. 146 (2002) 143

Evidence for second-phonon nuclear wobbling
D.R.Jensen, G.B.Hagemann, I.Hamamoto, S.W.Oedegaard, B.Herskind, G.Sletten, J.N.Wilson, K.Spohr, H.Huebel, P.Bringel, A.Neusser, G.Schoenwasser, A.K.Singh, W.C.Ma, H.Amro, A.Bracco, S.Leoni, G.Benzoni, A.Maj, C.M.Petrache, G.Lo Bianco, P.Bednarczyk and D.Curien, Phys. Rev. Lett. 89 (2002) 142503.

Isoscalar compression dipole strength in 208Pb
I.Hamamoto and H.Sagawa, Phys. Rev. C66 (2002) 044315.

M1 and Gamow-Teller transitions in T=1/2 nuclei 23Na and 23Mg
Y.Fujita, Y.Shimbara, I.Hamamoto, T.Adachi, G.P.A.Berg, H.Fujimura, H.Fujita, J.Gorres, K.Hara, K.Hatanaka, J.Kamiya, T.Kawabata, Y.Kitamura, Y.Shimizu, M.Uchida, H.P.Yoshida, M.Yoshifuku and M.Yosoi, Phys. Rev. C66 (2002) 044313.

Quantized wobbling excitations with alignments
I.Hamamoto and G.B.Hagemann, Phys. Rev. C67 (2003) 014319.

Nuclear wobbling-phonon excitations with alignments
I.Hamamoto, Nucl. Phys. A722 (2003) 389c.

A personal view of some issues involved in the structure of nuclei with large neutron excess
I.Hamamoto and B.R.Mottelson, C.R.Physique 4 (2003) 433.

Pair correlation in neutron drip line nuclei
I.Hamamoto and B.R.Mottelson, Phys. Rev. C68 (2003) 034312.

Quantized wobbling in nuclei
G.B.Hagemann and I.Hamamoto, Nuclear Physics News, Vol.13 (2003) 20.

Shell-structure and pair-correlation in nuclei close to the neutron drip line
I.Hamamoto, Nucl. Phys. A731 (2004) 211.

Supression of Gamow-Teller and M1 transitions in deformed mirror nuclei 25Mg and 25Al
Y.Simbara, Y.Fujita, T.Adachi, G.P.A.Berg, H.Fujita, K.Fujita, I.Hamamoto, K.Hatanaka, J.Kamiya, K.Nakanishi, Y.Sakemi, M.Uchida, T.Wakasa, K.Yamasaki and M.Yosoi, European Physical Journal A19 (2004) 25.

Coexisting wobbling and quasiparticle excitations in the triaxial potential well of 163Lu
D.R.Jensen, G.B.Hagemann, I.Hamamoto, B.Herskind, G.Sletten, J.N.Wilson, S.W.Oedegaard, K.Spohr, H.Huebel, P.Bringel, A.Neusser, G.Schoenwasser, A.K.Singh, W.C.Ma, H.Amro, A.Bracco, S.Leoni, A.Maj, C.M.Petrache, G.Lo Bianco, P.Bednarczyk and D.Curien, European Physical Journal A19 (2004) 173.

Evidence for the existence of the [202]3/2 deformed band in mirror nuclei 25Mg and 25Al
Y.Fujita, I.Hamamoto, H.Fujita, Y.Shimbara, T.Adachi, G.P.A.Berg, K.Fujita, K.Hatanaka, J.Kamiya, K.Nakanishi, Y.Sakemi, Y.Shimizu, M.Uchida, T.Wakasa and M.Yosoi, Phys. Rev. Lett. 92 (2004) 062502.

Dominance of low-l component in weakly-bound deformed single-neutron orbits
I.Hamamoto, Phys. Rev. C69 (2004) 041306(R).

Weakly-bound s1/2 neutrons in the many-body pair-correlation of neutron drip line nuclei
I.Hamamoto and B.R.Mottelson, Phys. Rev. C69 (2004) 064302.

Weakly-bound p3/2 neutrons and spin-response function in the many-body pair-correlation of neutron drip line nuclei
I.Hamamoto and H.Sagawa, Phys. Rev. C70 (2004) 034317.

Chiral bands - Spontaneous symmetry breaking - and the selection-rule for electromagnetic transitions in the chiral geometry
T.Koike, K.Starosta and I.Hamamoto , Phys. Rev. Lett. 93 (2004) 172502.

Effective pair gap of weakly bound neutrons in deformed nuclei
I.Hamamoto , Phys. Rev. C71 (2005) 037302.

One-particle resonant levels in a deformed potential
I.Hamamoto , Phys. Rev. C72 (2005) 024301.

Risk of misinterpretation of nearly degenerate pair bands as chiral partners in nuclei
C.M.Petrache, G.B.Hagemann, I.Hamamoto and K.Starosta, Phys. Rev. Lett. 96 (2006) 112502.

Pair correlation in deformed meutron-drip-line nuclei - eigenphase formalism in the asymptotic behavior
I.Hamamoto , Phys. Rev. C73 (2006) 044317.

Positive-energy one-particle levels in quadrupole-deformed Woods-Saxon potentials
I.Hamamoto , Phys. Rev. C73 (2006) 064308.

Weakly-bound neutrons and quadrupole response function in the many-body pair-correlation of neutron drip line nuclei
I.Hamamoto, H.Sagawa and X.R.Zhou, J. of Phys. G 32 (2006)1105.

Identification of the [202]3/2 deformed band in mirror nuclei 25Mg and 25Al and implications for unstable nuclei
Y.Fujita, I.Hamamoto, H.Fujita, Y.Shimbara, T.Adachi, G.P.A.Berg, K.Fujita, K.Hatanaka, J.Kamiya, N.Nakanishi, Y.Sakemi, Y.Shimizu, M.Uchida, T.Wakasa and M.Yosoi , Physica Scripta, T125 (2006) 194.

Electromagnetic properties of nuclear chiral partners
K.Starosta, I.Hamamoto, T.Koike and C.Vaman, Physica Scripta, T125 (2006) 18.

Resonant and weakly-bound one-particle levels in quadrupole-deformed potentials
I.Hamamoto, Eur. Phys. J. Special Topics 150 (2007) 123.

Lifetime of the Isomeric second 0+ state in Be-12
S.Shimoura, ..., and I.Hamamoto, Phys. Lett. B654 (2007) 87.

Properties of Be-12 and Be-11 in terms of single-particle motion in deformed potential
I.Hamamoto and S.Shimoura, J. of Phys. G 34 (2007) 2715.

Nilsson diagrams for light neutron-rich nuclei with weakly-bound neutrons
I.Hamamoto, Phys. Rev. C76, 054319 (2007)

Neutron decay width of one-particle resonant levels in deformed nuclei
I.Hamamoto, Phys. Rev. C77, 054311 (2008)

One-particle properties of deformed N~28 odd-N nuclei with weakly bound or resonant neutrons
I.Hamamoto, Phys. Rev. C79, 014307 (2009)

Further examination of prolate-shape dominance in nuclear deformation
I.Hamamoto and B.R.Mottelson, Phys. Rev. C79, 034317 (2009)

Lifetime Measurements of the Neutron-Rich N=30 Isotones 50Ca and 51Sc: Orbital Dependence of Effective Charge in the fp Shell
J.J.Valiente-Dobon, ....... and I.Hamamoto, Phys. Rev. Lett. 102, 242502 (2009)

Wobbling mode in 167Ta
D.J.Hartley, ....... and I.Hamamoto, Phys. Rev. C80, 041304(R) (2009)

Interpretation of Coulomb breakup of 31Ne in terms of deformation
I.Hamamoto, Phys. Rev. C81, 021304(R) (2010)

Change of shell structure and magnetic moments of odd-N deformed nuclei towards neutron drip line
I.Hamamoto, J. Phys. G: Nucl. Part. Phys. 37 (2010) 055102

Comment on "Intruder Configurations in the A=33 Isobars: 33Mg and 33Al"
D.T.Yordanov, K.Blaum, M.De Rydt, M.Kowalska, R.Neugart, G.Neyens and I.Hamamoto, Phys. Rev. Lett. 104, 129201 (2010)

Shell structure of weakly-bound and resonant neutrons
I.Hamamoto, Journal of Physics: Conference Series 267, 012005 (2011)

Selection rule for electromagnetic transitions in nuclear chiral geometry
I.Hamamoto, International Journal of Modern Physics E 20, 373 (2011)

Opportunities for collective model and chirality studies at TRIUMF
I.Hamamoto, International Journal of Modern Physics E 20, 349 (2011)

Shape deformations in atomic nuclei
I.Hamamoto and B.R.Mottelson, Scholarpedia,7(4):10693 (2012)

Neutron shell structure and deformation in neutron-drip-line nuclei
I.Hamamoto, Phys. Rev. C85, 064329 (2012)

Possible presence and properties of multi-chiral-pair bands in odd-odd nuclei with the same intrinsic configuration
I.Hamamoto, Phys. Rev. C88, 024327 (2013)

Oblate deformation of light neutron-rich even-even nuclei
I.Hamamoto, Phys. Rev. C89, 057301 (2014)

Self-consistent Hartree-Fock and RPA Green's function method indicate no pygmy resonance in the monopole response of neutron-rich Ni isotopes
I.Hamamoto and H.Sagawa, Phys. Rev. C90, 031302(R) (2014)

Interplay between one-particle and collective degrees of freedom in nuclei
I.Hamamoto, Physica Scripta 91, 023004 (2016)

Shell structure of one-particle resonances in deformed potentials
I.Hamamoto, Phys. Rev. C93, 054328 (2016)

Examining possible neutron-halo nuclei heavier than 37Mg
I.Hamamoto, Phys. Rev. C95, 044325 (2017)

Last updated: April 28, 2017