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NSR database version of June 30, 2015.

Search: Author = H.Ejiri

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2015FR02     Phys.Rev. C 91, 034608 (2015)

D.Frekers, T.Adachi, H.Akimune, M.Alanssari, B.A.Brown, B.T.Cleveland, H.Ejiri, H.Fujita, Y.Fujita, M.Fujiwara, V.N.Gavrin, M.N.Harakeh, K.Hatanaka, M.Holl, C.Iwamoto, A.Lennarz, A.Okamoto, H.Okamura, T.Suzuki, A.Tamii

Precision evaluation of the 71Ga (νe, e-) solar neutrino capture rate from the (3He, t) charge-exchange reaction

doi: 10.1103/PhysRevC.91.034608


2014EJ01     Phys.Lett. B 729, 27 (2014)

H.Ejiri, N.Soukouti, J.Suhonen

Spin-dipole nuclear matrix elements for double beta decays and astro-neutrinos

RADIOACTIVITY 72,74As, 84,86Rb, 122Sb, 124,126I, 132La(β+), 74,76,78As, 84Br, 84,86,88Rb, 92,94Y, 122Sb, 126I(β-); calculated spin-dipole and quasi-particle nuclear matrix elements. QRPA, comparison with available data.

doi: 10.1016/j.physletb.2013.12.051


2014EJ02     Phys.Rev. C 89, 055501 (2014)

H.Ejiri, S.R.Elliott

Charged current neutrino cross section for solar neutrinos, and background to ββ- experiments

NUCLEAR REACTIONS 76Ge, 100Mo, 130Te, 136Xe(ν, e-), E=solar neutrinos; calculated capture rates for charge-current (CC) interactions for ββ emitters; estimated contribution to background in double-beta decay and dark matter experiments from β- decays of 76As, 130I and 136Cs produced in neutrino capture.

doi: 10.1103/PhysRevC.89.055501


2013EJ01     J.Phys.Soc.Jpn. 82, 044202 (2013)

H.Ejiri, I.H.Hashim, Y.Hino, Y.Kuno, Y.Matsumoto, K.Ninomiya, H.Sakamoto, A.Sato, T.Shima, A.Shinohara, K.Takahisa, N.H.Tran

Nuclear γ Rays from Stopped Muon Capture Reactions for Nuclear Isotope Detection

NUCLEAR REACTIONS 54Fe(μ, 2n), 56Fe, 65Cu, 90,92Zr, 99Tc, 109Ag, 187Re, 197Au, 233U, 239,240Pu(μ, X), 128Te, 235U(μ, n), E not given; calculated Eγ, Iγ; deduced yields. Muon capture isotope detection (MuCID).

doi: 10.7566/JPSJ.82.044202


2013EJ03     Phys.Rev. C 88, 054610 (2013)

H.Ejiri, A.I.Titov, M.Boswell, A.Young

Neutrino-nuclear response and photonuclear reactions

NUCLEAR REACTIONS 76Se, 100Mo(polarized γ, n), E in MeV to GeV region; calculated angular distribution of neutrons emitted from 1-, 2+, 1+ and 2- photonuclear excitations. Use of electromagnetic (EM) matrix element to evaluate the single β+ (weak) matrix element associated with the 0νββ matrix element through IAS and non-IAS states. Discussed current and planned experimental facilities for such experiments.

doi: 10.1103/PhysRevC.88.054610


2013FR13     Phys.Lett. B 722, 233 (2013)

D.Frekers, M.C.Simon, C.Andreoiu, J.C.Bale, M.Brodeur, T.Brunner, A.Chaudhuri, U.Chowdhury, J.R.C.Lopez-Urrutia, P.Delheij, H.Ejiri, S.Ettenauer, A.T.Gallant, V.Gavrin, A.Grossheim, M.N.Harakeh, F.Jang, A.A.Kwiatkowski, J.Lassen, A.Lennarz, M.Luichtl, T.Ma, T.D.Macdonald, E.Mane, D.Robertson, B.E.Schultz, V.V.Simon, A.Teigelhofer, J.Dilling

Penning-trap Q-value determination of the 71Ga(ν, e-)71Ge reaction using threshold charge breeding of on-line produced isotopes

ATOMIC MASSES 71Ga, 71Ge; measured TOF, TOF-ICR, ion cyclotron resonance spectra; deduced Q-value and its uncertainty. TITAN Penning trap at ISAC/TRIUMF, comparison with AME data.

doi: 10.1016/j.physletb.2013.04.019


2013FR14     Nucl.Phys. A916, 219 (2013)

D.Frekers, P.Puppe, J.H.Thies, H.Ejiri

Gamow-Teller strength extraction from (3He, t) reactions

NUCLEAR REACTIONS 48Ca(3He, t), E*=6.677 MeV;76Ge(3He, t), E*=8.308 MeV;128Te(3He, t), E*=11.948 MeV; calculated σ(θ) using DWBA70, DW81 and ACCBA codes; deduced scaling factor, IAS scaling factor. 71Ga, 76Ge, 82Se, 90,92,96Zr, 100Mo, 128,130Te, 136Xe; calculated σ(q=0) for IAS excitation in (3He, t) reactions, Gamow-Teller strength B(GT). Compared with available relevant data, also for (t, 3He), (d, 2He) and (p, n) reactions.

doi: 10.1016/j.nuclphysa.2013.08.006


2013SZ04     Nucl.Instrum.Methods Phys.Res. A729, 41 (2013)

B.Szpunar, C.Rangacharyulu, S.Date, H.Ejiri

Estimate of production of medical isotopes by photo-neutron reaction at the Canadian Light Source

NUCLEAR REACTIONS 197Au, 193Ir, 100Mo(γ, n), E<35 MeV; calculated σ. FLUKA code, comparison with experimental data.

doi: 10.1016/j.nima.2013.06.106


2012EJ01     J.Phys.Soc.Jpn. 81, 033201 (2012)

H.Ejiri

Nuclear Matrix Element for Two Neutrino Double Beta Decay from 136Xe

RADIOACTIVITY 136Xe(2β-); calculated nuclear matrix element for the two neutrino mode. Fermi surface quasi particle model (FSQP). Comparison with experimental data.

doi: 10.1143/JPSJ.81.033201


2012PU02     Phys.Rev. C 86, 044603 (2012)

P.Puppe, A.Lennarz, T.Adachi, H.Akimune, H.Ejiri, D.Frekers, H.Fujita, Y.Fujita, M.Fujiwara, E.Ganioglu, E.-W.Grewe, K.Hatanaka, R.Hodak, C.Iwamoto, N.T.Khai, A.Okamoto, H.Okamura, P.P.Povinec, G.Susoy, T.Suzuki, A.Tamii, J.H.Thies, M.Yosoi

High resolution (3He, t)experiment on the double-β decaying nuclei 128Te and 130Te

NUCLEAR REACTIONS 128,130Te(3He, t), E=420 MeV; measured triton spectra, σ(θ) using Grand Raiden magnetic spectrometer at RCNP facility. 128,130I; deduced levels, J, π, IAS, B(GT). DWBA analysis. Discussed impact on ββ decay matrix elements for 128,130Te.

doi: 10.1103/PhysRevC.86.044603
Data from this article have been entered in the XUNDL database. For more information, click here.


2012TH06     Phys.Rev. C 86, 014304 (2012)

J.H.Thies, D.Frekers, T.Adachi, M.Dozono, H.Ejiri, H.Fujita, Y.Fujita, M.Fujiwara, E.-W.Grewe, K.Hatanaka, P.Heinrichs, D.Ishikawa, N.T.Khai, A.Lennarz, H.Matsubara, H.Okamura, Y.Y.Oo, P.Puppe, T.Ruhe, K.Suda, A.Tamii, H.P.Yoshida, R.G.T.Zegers

The (3He, t) reaction on 76Ge, and the double-β-decay matrix element

NUCLEAR REACTIONS 76Ge(3He, t)76As, E=420 MeV; measured triton spectra, σ(θ) using Grand Raiden spectrometer at RCNP facility. 76As; deduced levels, L-transfers, J, π, IAS, GT resonance (GTR) and the spin-dipole resonance (SDR), B(GT) values. DWBA analysis of Σ(θ) data. Comparison of B(GT)- distributions with B(GT)+ from 76Se(d, 2He)76As reaction. Discussed impact on double-beta decay matrix elements for 76Ge decay.

RADIOACTIVITY 76Ge(2β-); analyzed double beta-decay matrix elements.

doi: 10.1103/PhysRevC.86.014304
Data from this article have been entered in the XUNDL database. For more information, click here.


2012TH08     Phys.Rev. C 86, 044309 (2012)

J.H.Thies, T.Adachi, M.Dozono, H.Ejiri, D.Frekers, H.Fujita, Y.Fujita, M.Fujiwara, E.-W.Grewe, K.Hatanaka, P.Heinrichs, D.Ishikawa, N.T.Khai, A.Lennarz, H.Matsubara, H.Okamura, Y.Y.Oo, P.Puppe, T.Ruhe, K.Suda, A.Tamii, H.P.Yoshida, R.G.T.Zegers

High-resolution 100Mo(3He, t)100Tc charge-exchange experiment and the impact on double-β decays and neutrino charged-current reactions

NUCLEAR REACTIONS 100Mo(3He, t), E=420 MeV; measured triton spectra, σ(θ) at RCNP facility. 100Tc; deduced levels, IAS, J, π, B(GT). Discussed impact on the matrix elements for 2νββ decay. DWBA analysis.

doi: 10.1103/PhysRevC.86.044309
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2389.
Data from this article have been entered in the XUNDL database. For more information, click here.


2012TH12     Phys.Rev. C 86, 054323 (2012)

J.H.Thies, P.Puppe, T.Adachi, M.Dozono, H.Ejiri, D.Frekers, H.Fujita, Y.Fujita, M.Fujiwara, E.-W.Grewe, K.Hatanaka, P.Heinrichs, D.Ishikawa, N.T.Khai, A.Lennarz, H.Matsubara, H.Okamura, Y.Y.Oo, T.Ruhe, K.Suda, A.Tamii, H.P.Yoshida, R.G.T.Zegers

High-resolution 96Zr(3He, t) experiment and the matrix element for double-β decay

NUCLEAR REACTIONS 90,92,96Zr(3He, t), E=420 MeV; measured triton spectra, σ(θ) using Grand Raiden spectrometer at RCNP facility. 90,92,96Nb; deduced levels, IAS, L-transfers, J, π, B(GT), nuclear matrix element for 2νββ decay of 96Zr. 91,94Zr(3He, t), E=420 MeV; measured triton spectrum; deduced IAS in 91,94Nb. Comparison with shell model calculations, and with previous study of 96Mo(d, 2He)96Nb reaction.

doi: 10.1103/PhysRevC.86.054323
Data from this article have been entered in the XUNDL database. For more information, click here.


2012VE07     Rep.Prog.Phys. 75, 103601 (2012)

J.D.Vergados, H.Ejiri, F.Simkovic

Theory of neutrinoless double-beta decay

RADIOACTIVITY 48Ca, 76Ge, 82Se, 96Zr, 100Mo, 110Pd, 116Cd, 124Sn, 128,130Te, 136Xe, 150Nd(2β-); calculated nuclear matrix elements. Comparison with available data.

doi: 10.1088/0034-4885/75/10/106301


2011EJ01     J.Phys.Soc.Jpn. 80, 094202 (2011)

H.Ejiri, T.Shima, S.Miyamoto, K.Horikawa, Y.Kitagawa, Y.Asano, S.Date, Y.Ohashi

Resonant Photonuclear Reactions for Isotope Transmutation

NUCLEAR REACTIONS 100Mo, 197Au(γ, n), 100Mo(γ, p), E=12-16 MeV; measured reaction products, Eγ, Iγ; deduced relative yields, effective σ.

doi: 10.1143/JPSJ.80.094202


2011FR15     Phys.Lett. B 706, 134 (2011)

D.Frekers, H.Ejiri, H.Akimune, T.Adachi, B.Bilgier, B.A.Brown, B.T.Cleveland, H.Fujita, Y.Fujita, M.Fujiwara, E.Ganioglu, V.N.Gavrin, E.-W.Grewe, C.J.Guess, M.N.Harakeh, K.Hatanaka, R.Hodak, M.Holl, C.Iwamoto, N.T.Khai, H.C.Kozer, A.Lennarz, A.Okamoto, H.Okamura, P.P.Povinec, P.Puppe, F.Simkovic, G.Susoy, T.Suzuki, A.Tamii, J.H.Thies, J.Van de Walle, R.G.T.Zegers

The 71Ga(3He, t) reaction and the low-energy neutrino response

NUCLEAR REACTIONS 71Ga(3He, t), E=420 MeV; measured reaction products; deduced isobaric-analogue resonance yields, σ(θ), Gamow-Teller strength values. SAGE and GALLEX calibration implications.

doi: 10.1016/j.physletb.2011.10.061
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2361.


2011GU14     Phys.Rev. C 83, 064318 (2011)

C.J.Guess, T.Adachi, H.Akimune, A.Algora, S.M.Austin, D.Bazin, B.A.Brown, C.Caesar, J.M.Deaven, H.Ejiri, E.Estevez, D.Fang, A.Faessler, D.Frekers, H.Fujita, Y.Fujita, M.Fujiwara, G.F.Grinyer, M.N.Harakeh, K.Hatanaka, C.Herlitzius, K.Hirota, G.W.Hitt, D.Ishikawa, H.Matsubara, R.Meharchand, F.Molina, H.Okamura, H.J.Ong, G.Perdikakis, V.Rodin, B.Rubio, Y.Shimbara, G.Susoy, T.Suzuki, A.Tamii, J.H.Thies, C.Tur, N.Verhanovitz, M.Yosoi, J.Yurkon, R.G.T.Zegers, J.Zenihiro

The 150Nd(3He, t) and 150Sm(t, 3He) reactions with applications to ββ decay of 150Nd

NUCLEAR REACTIONS 150Nd(3He, t), E=140 MeV/nucleon; 150Sm(t, 3He), E=115 MeV/nucleon; measured triton and 3He spectra, excitation energy spectra, differential cross sections, σ(θ) 150Pm; deduced B(GT) strengths; isovector spin-flip giant monopole resonance (IVSGMR). Grand Raiden Spectrometer for (3He, t) and S-800 spectrometer for (t, 3He). Comparison with Quasi-Particle Random Phase Approximation (QRPA) calculations. Application to double β decay of 150Nd.

RADIOACTIVITY 150Nd(2β-); calculated matrix elements for 0νββ and 2νββ decay modes using QRPA calculations. Comparison with experimental data.

doi: 10.1103/PhysRevC.83.064318
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2347.
Data from this article have been entered in the XUNDL database. For more information, click here.


2011PU06     Phys.Rev. C 84, 051305 (2011)

P.Puppe, D.Frekers, T.Adachi, H.Akimune, N.Aoi, B.Bilgier, H.Ejiri, H.Fujita, Y.Fujita, M.Fujiwara, E.Ganioglu, M.N.Harakeh, K.Hatanaka, M.Holl, H.C.Kozer, J.Lee, A.Lennarz, H.Matsubara, K.Miki, S.E.A.Orrigo, T.Suzuki, A.Tamii, J.H.Thies

High-resolution (3He, t) reaction on the double-β decaying nucleus 136Xe

NUCLEAR REACTIONS 136Xe(3He, t), E=420 MeV; measured E(t), I(t), σ(θ) using Grand-Raiden spectrometer. 136Cs; deduced levels, J, π, l-values, Gamow-Teller (GT) transition strengths. DWBA analysis. Relevance to double beta decay matrix elements for 136Xe.

doi: 10.1103/PhysRevC.84.051305
Data from this article have been entered in the XUNDL database. For more information, click here.


2010EJ01     Prog.Part.Nucl.Phys. 64, 249 (2010)

H.Ejiri

Double beta decays and neutrino nuclear responses

doi: 10.1016/j.ppnp.2009.12.021


2010EJ02     Nucl.Phys. A844, 10c (2010)

H.Ejiri

MOON for symmetry studies of neutrinos by double beta decays and neutrino nuclear responses

doi: 10.1016/j.nuclphysa.2010.05.006


2009EJ01     J.Phys.Soc.Jpn. 78, 074201 (2009)

H.Ejiri

Experimental Nuclear Matrix Elements for Two Neutrino Double Beta Decays and Single Beta Decays

NUCLEAR STRUCTURE 76Ge, 82Se, 96Zr, 100Mo, 116Cd, 128Te, 130Te;analyzed 2β--decay matrix elements in terms of successive β--decays via Fermi-surface.

doi: 10.1143/JPSJ.78.074201


2009NA02     Phys.Rev. C 79, 025210 (2009)

T.Nakano, N.Muramatsu, D.S.Ahn, J.K.Ahn, H.Akimune, Y.Asano, W.C.Chang, S.Date, H.Ejiri, H.Fujimura, M.Fujiwara, S.Fukui, H.Hasegawa, K.Hicks, K.Horie, T.Hotta, K.Imai, T.Ishikawa, T.Iwata, Y.Kato, H.Kawai, Z.Y.Kim, K.Kino, H.Kohri, N.Kumagai, S.Makino, T.Matsuda, N.Matsuoka, T.Matsumura, T.Mibe, M.Miyabe, Y.Miyachi, M.Niiyama, M.Nomachi, Y.Ohashi, H.Ohkuma, T.Ooba, D.S.Oshuev, C.Rangacharyulu, A.Sakaguchi, P.M.Shagin, Y.Shiino, A.Shimizu, H.Shimizu, Y.Sugaya, M.Sumihama, Y.Toi, H.Toyokawa, A.Wakai, C.W.Wang, S.C.Wang, K.Yonehara, T.Yorita, M.Yoshimura, M.Yosoi, R.G.T.Zegers

Evidence for theΘ+ in the γd → K+K- pn reaction by detecting K+K- pairs

doi: 10.1103/PhysRevC.79.025210


2007SU23     Phys.Lett. B 657, 32 (2007)

M.Sumihama, J.K.Ahn, H.Akimune, Y.Asano, W.C.Chang, S.Date, H.Ejiri, H.Fujimura, M.Fujiwara, K.Hicks, T.Hotta, K.Imai, T.Ishikawa, T.Iwata, H.Kawai, Z.Y.Kim, K.Kino, H.Kohri, N.Kumagai, S.Makino, T.Matsumura, N.Matsuoka, T.Mibe, M.Miyabe, Y.Miyachi, M.Morita, N.Muramatsu, T.Nakano, M.Niiyama, M.Nomachi, Y.Ohashi, H.Ohkuma, T.Ooba, D.S.Oshuev, C.Rangacharyulu, A.Sakaguchi, T.Sato, P.M.Shagin, Y.Shiino, H.Shimizu, Y.Sugaya, H.Toyokawa, A.Wakai, C.W.Wang, S.C.Wang, K.Yonehara, T.Yorita, M.Yosoi, R.G.T.Zegers

Backward-angle photoproduction of π0 mesons on the proton at Eγ = 1.5-2.4 GeV

NUCLEAR REACTIONS 1H(polarized γ, π0), E=1.5-2.4 GeV; measured missing mass spectra, σ(E, θ), beam asymmetry.

doi: 10.1016/j.physletb.2007.10.032
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetK2114.


2006EJ01     Prog.Part.Nucl.Phys. 57, 153 (2006)

H.Ejiri

MOON for double beta decays and X-rays from WIMP nuclear interactions

doi: 10.1016/j.ppnp.2005.11.005


2006EJ02     Czech.J.Phys. 56, 459 (2006)

H.Ejiri

Nuclear responses for double-beta decays by hadron, photon, and neutrino probes and MOON experiment

doi: 10.1007/s10582-006-0109-3


2006EJ03     Phys.Lett. B 639, 218 (2006)

H.Ejiri, Ch.C.Moustakidis, J.D.Vergados

Dark matter search by exclusive studies of X-rays following WIMPs nuclear interactions

doi: 10.1016/j.physletb.2006.03.037


2005KO02     Nucl.Phys. B(Proc.Supp.) S139, 72 (2005)

K.Kobayashi, Y.Itow, M.Shiozawa, M.Yosoi, H.Toyokawa, H.Akimune, H.Ejiri, H.Fujimura, M.Fujiwara, K.Hara, K.Y.Hara, T.Ishikawa, M.Itoh, T.Kawabata, M.Nakamura, H.Sakaguchi, Y.Sakemi, H.Takeda, M.Uchida, T.Yamada, Y.Yasuda, H.P.Yoshida, R.G.T.Zegers

Detection of nuclear de-excitation gamma-rays in water Cherenkov detector

NUCLEAR REACTIONS 16O(p, 2p), E=392 MeV; measured Ep, Eγ, pp-, pγ-coin. 15N levels deduced γ-emission probabilities.

doi: 10.1016/j.nuclphysbps.2004.11.206


2005NA36     Phys.Rev. C 72, 041001 (2005)

S.Nakayama, T.Yamagata, H.Akimune, Y.Arimoto, H.Daito, H.Ejiri, H.Fujimura, Y.Fujita, M.Fujiwara, K.Fushimi, M.B.Greenfield, H.Kohri, N.Koori, K.Takahisa, T.Takeuchi, M.Tanaka, K.Yonehara, H.P.Yoshida

M1 cross section for the photodisintegration of deuterium using the 2H(7Li, 7Be) reaction

NUCLEAR REACTIONS 2H, C(7Li, 7Be), E=65 MeV/nucleon; measured spin-flip and spin-nonflip particle spectra; deduced charge-exchange spin-flip σ. 2H(γ, n), E ≈ 1.5-10 MeV; deduced magnetic dipole σ. Comparison with previous results, model predictions.

doi: 10.1103/PhysRevC.72.041001


2005NO02     Nucl.Phys. B(Proc.Supp.) S138, 221 (2005)

M.Nomachi, P.Doe, H.Ejiri, S.R.Elliott, J.Engel, M.Finger, J.A.Formaggio, K.Fushimi, V.Gehman, A.Gorin, M.Greenfield, R.Hazama, K.Ichihara, Y.Ikegami, H.Ishii, T.Itahashi, P.Kavitov, V.Kekelidze, K.Kuroda, V.Kutsalo, I.Manouilov, K.Matsuoka, H.Nakamura, T.Ogama, A.Para, K.Rielage, A.Rjazantsev, R.G.H.Robertson, Y.Shichijo, T.Shima, Y.Shimada, G.Shirkov, A.Sissakian, Y.Sugaya, A.Titov, V.Vatulin, O.E.Vilches, V.Voronov, J.F.Wilkerson, D.I.Will, S.Yoshida

MOON (Mo Observatory Of Neutrinos) for double beta decay

doi: 10.1016/j.nuclphysbps.2004.11.053


2005TI03     Phys.Rev. C 71, 035203 (2005)

A.I.Titov, H.Ejiri, H.Haberzettl, K.Nakayama

Some aspects of Θ+ parity determination in the reaction γN → Θ+ (K-bar) → NK(K-bar)

NUCLEAR REACTIONS 1n, 1H(γ, K+K-), E ≈ threshold; calculated pentaquark production associated invariant mass spectra, spin observables. Implications for parity determination discussed.

doi: 10.1103/PhysRevC.71.035203


2004OG01     Nucl.Phys. A730, 215 (2004)

I.Ogawa, R.Hazama, H.Miyawaki, S.Shiomi, N.Suzuki, Y.Ishikawa, G.Kunitomi, Y.Tanaka, M.Itamura, K.Matsuoka, S.Ajimura, T.Kishimoto, H.Ejiri, N.Kudomi, K.Kume, H.Ohsumi, K.Fushimi

Search for neutrino-less double beta decay of 48Ca by CaF2 scintillator

RADIOACTIVITY 48Ca(2β-); measured 0ν-accompanied 2β-decay T1/2 lower limit; deduced neutrino mass limits.

doi: 10.1016/j.nuclphysa.2003.10.015


2004YO06     Nucl.Phys. A738, 451 (2004)

M.Yosoi, H.Akimune, I.Daito, H.Ejiri, H.Fujimura, M.Fujiwara, K.Fushimi, K.Hara, K.Y.Hara, H.Hashimoto, T.Ishikawa, M.Itoh, Y.Itow, S.Kishi, T.Kawabata, K.Kawase, M.Kinoshita, K.Kobayashi, M.Nakamura, K.Nakanishi, Y.Nakatsugawa, S.Nakayama, T.Noro, E.Obayashi, S.Okumura, H.Sakaguchi, Y.Sakemi, M.Shiozawa, H.Takeda, T.Taki, A.Tamii, M.Tanaka, S.Terashima, H.Toyokawa, N.Tsukahara, M.Uchida, T.Yamada, T.Yamagata, Y.Yasuda, H.P.Yoshida, R.G.T.Zegers, J.Zenihiro

Cluster fragmentations of deep (1s)-hole states in light nuclei

NUCLEAR REACTIONS 7Li, 12C, 16O(p, 2p), E=392 MeV; measured excitation energy spectra, decay fragment spectra from deep-hole states. 6He, 11B, 15N deduced cluster structure features.

doi: 10.1016/j.nuclphysa.2004.04.084
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1819.


2004YO08     Yad.Fiz. 67, 1838 (2004); Phys.Atomic Nuclei 67, 1810 (2004)

M.Yosoi, H.Akimune, I.Daito, H.Ejiri, H.Fujimura, M.Fujiwara, K.Hara, K.Y.Hara, T.Ishikawa, M.Itoh, Y.Itow, T.Kawabata, K.Kobayashi, M.Nakamura, T.Noro, E.Obayashi, H.Sakaguchi, Y.Sakemi, M.Shiozawa, H.Takeda, T.Taki, A.Tamii, H.Toyokawa, N.Tsukahara, M.Uchida, T.Yamada, Y.Yasuda, H.P.Yoshida, R.G.T.Zegers

Structures and Decay of Deep-Hole States in Light Nuclei Populated by the (p, 2p) Reactions

NUCLEAR REACTIONS 12C, 16O(p, 2p), E=392 MeV; measured particle spectra, σ(E, θ). 11B, 15N deduced excited states particle decay branching ratios. Comparison with model predictions.

doi: 10.1134/1.1811183


2003CI01     Eur.Phys.J. A 16, 353 (2003)

O.Civitarese, J.Suhonen, H.Ejiri

Perturbative analysis of the 2νββ decays of 100Mo and 116Cd

RADIOACTIVITY 100Mo, 116Cd(2β-); calculated 2ν-accompanied 2β-decay matrix elements. Perturbative approach, quasiparticle RPA.

doi: 10.1140/epja/i2002-10100-3


2003DO13     Nucl.Phys. A721, 517c (2003)

P.Doe, H.Ejiri, S.R.Elliott, J.Engel, M.Finger, K.Fushimi, V.Gehman, A.Gorine, M.Greenfield, R.Hazama, K.Ichihara, T.Itahashi, P.Kavitov, V.Kekelidze, K.Kuroda, V.Kutsalo, K.Matsuoka, I.Manouilov, M.Nomachi, A.Para, A.Rjazantsev, R.G.H.Robertson, Y.Shichijo, L.C.Stonehill, T.Shima, G.Shirkov, A.Sissakian, Y.Sugaya, A.Titov, V.Vatulin, V.Voronov, O.E.Vilches, J.F.Wilkerson, D.I.Will, S.Yoshida

Neutrino Studies in 100Mo and MOON - Mo Observatory of Neutrinos -

doi: 10.1016/S0375-9474(03)01113-8


2003IT04     Nucl.Phys. A718, 466c (2003)

T.Itahashi, M.Komori, N.Kudomi, K.Kume, Y.Nagai, M.Ohsumi, K.Takahisa, H.Toki, H.Ejiri, H.Ueda, S.Yoshida

Cross section of 3He(3He, 2p)4He measured near the Gamow energy

NUCLEAR REACTIONS 3He(3He, 2p), E(cm)=31.2-45.3 keV; measured σ; deduced astrophysical S-factors.

doi: 10.1016/S0375-9474(03)00853-4
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1890.


2003NA08     Phys.Rev.Lett. 91, 012002 (2003)

T.Nakano, D.S.Ahn, J.K.Ahn, H.Akimune, Y.Asano, W.C.Chang, S.Date, H.Ejiri, H.Fujimura, M.Fujiwara, K.Hicks, T.Hotta, K.Imai, T.Ishikawa, T.Iwata, H.Kawai, Z.Y.Kim, K.Kino, H.Kohri, N.Kumagai, S.Makino, T.Matsumura, N.Matsuoka, T.Mibe, K.Miwa, M.Miyabe, Y.Miyachi, M.Morita, N.Muramatsu, M.Niiyama, M.Nomachi, Y.Ohashi, T.Ooba, H.Ohkuma, D.S.Oshuev, C.Rangacharyulu, A.Sakaguchi, T.Sasaki, P.M.Shagin, Y.Shiino, H.Shimizu, Y.Sugaya, M.Sumihama, H.Toyokawa, A.Wakai, C.W.Wang, S.C.Wang, K.Yonehara, T.Yorita, M.Yoshimura, M.Yosoi, R.G.T.Zegers

Evidence for a Narrow S = +1 Baryon Resonance in Photoproduction from the Neutron

NUCLEAR REACTIONS 12C(γ, K+K-), E ≈ 1.5-2.4 GeV; measured kaon missing mass spectra; deduced baryon resonance features.

doi: 10.1103/PhysRevLett.91.012002


2003OG05     Nucl.Phys. A721, 525c (2003)

I.Ogawa, R.Hazama, S.Ajimura, K.Matsuoka, N.Kudomi, K.Kume, H.Ohsumi, K.Fushimi, N.Suzuki, T.Nitta, H.miyawaki, S.Shiomi, Y.Tanaka, Y.Ishikawa, M.Itamura, K.Kishimoto, A.Katsuki, H.Sakai, D.Yokoyama, S.Umehara, S.Tomii, K.Mukaida, S.Yoshida, H.Ejiri, T.Kishimoto

Double beta decay study of 48Ca by CaF2 scintillator

RADIOACTIVITY 48Ca(2β-); measured 0ν-accompanied 2β decay T1/2 lower limit.

doi: 10.1016/S0375-9474(03)01115-1


2003YO01     Phys.Lett. 551B, 255 (2003)

M.Yosoi, H.Akimune, I.Daito, H.Ejiri, H.Fujimura, M.Fujiwara, T.Ishikawa, M.Itoh, T.Kawabata, M.Nakamura, T.Noro, E.Obayashi, H.Sakaguchi, H.Takeda, T.Taki, A.Tamii, H.Toyokawa, N.Tsukahara, M.Uchida, T.Yamada, H.P.Yoshida

Structure and decay of the s-hole state in 11B studied via the 12C(p, 2p)11B* reaction

NUCLEAR REACTIONS 12C(p, 2p), E=392 MeV; measured particle spectra following compound nucleus decay. 11B level deduced configuration, decay branching ratios. Comparison with shell model predictions.

doi: 10.1016/S0370-2693(02)03062-9
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1819.


2003YO09     Nucl.Phys. A721, 1056c (2003)

S.Yoshida, H.Ejiri, K.Fushimi, K.Hayashi, T.Kishimoto, N.Kudomi, K.Kume, H.Kuramoto, K.Matsuoka, H.Ohsumi, K.Takahisa, Y.Tsujimoto, S.Umehara

Search for WIMPs with NaI(Tl) Detectors at Oto Cosmo Observatory

doi: 10.1016/S0375-9474(03)01284-3


2003ZE04     Phys.Rev.Lett. 91, 092001 (2003)

R.G.T.Zegers, M.Sumihama, D.S.Ahn, J.K.Ahn, H.Akimune, Y.Asano, W.C.Chang, S.Date, H.Ejiri, H.Fujimura, M.Fujiwara, K.Hicks, T.Hotta, K.Imai, T.Ishikawa, T.Iwata, H.Kawai, Z.Y.Kim, K.Kino, H.Kohri, N.Kumagai, S.Makino, T.Matsumura, N.Matsuoka, T.Mibe, K.Miwa, M.Miyabe, Y.Miyachi, M.Morita, N.Muramatsu, T.Nakano, M.Niiyama, M.Nomachi, Y.Ohashi, T.Ooba, H.Ohkuma, D.S.Oshuev, C.Rangacharyulu, A.Sakaguchi, T.Sasaki, P.M.Shagin, Y.Shiino, H.Shimizu, Y.Sugaya, H.Toyokawa, A.Wakai, C.W.Wang, S.C.Wang, K.Yonehara, T.Yorita, M.Yoshimura, M.Yosoi

Beam-Polarization Asymmetries for the p(γ(pol), K+)Λ and p(γ(pol), K+0 Reactions for Eγ = 1.5-2.4 GeV

NUCLEAR REACTIONS 1H(polarized γ, K+X), E=1.5-2.4 GeV; measured hyperon production associated beam polarization asymmetries. Comparison with model predictions.

doi: 10.1103/PhysRevLett.91.092001


2002EJ01     Acta Phys.Pol. B33, 173 (2002)

H.Ejiri

Neutrino Studies in Nuclei and Nuclear Responses for Neutrinos


2002EJ02     Phys.Lett. 530B, 27 (2002)

H.Ejiri, J.Engel, N.Kudomi

Supernova-Neutrino Studies with 100Mo

NUCLEAR REACTIONS 100Mo(ν, e), E=0-100 MeV; calculated σ, electron energy spectrum for ν originating in a supernova event. Effects of spin-isospin resonances discussed, possible detector design for supernova neutrinos proposed.

doi: 10.1016/S0370-2693(02)01349-7


2002EJ03     Czech.J.Phys. 52, 637 (2002)

H.Ejiri

Nuclear Responses for Neutrinos and Mo Observatory of Neutrinos

doi: 10.1023/A:1015386016538


2002EJ04     Prog.Part.Nucl.Phys. 48, 185 (2002)

H.Ejiri

Double Beta Decays and Neutrino Masses

doi: 10.1016/S0146-6410(02)00124-2


2002EJ05     Nucl.Phys. B(Proc.Supp.) S110, 375 (2002)

H.Ejiri, J.Engel, K.Fushimi, K.Hayashi, R.Hazama, T.Kishimoto, P.Krastev, N.Kudomi, K.Kume, H.Kuramoto, K.Matsuoka, R.G.H.Robertson, K.Takahisa, S.Yoshida

Double Beta Decays of 100Mo and Molybdenum Observatory of Neutrinos

RADIOACTIVITY 100Mo(2β-); measured β-spectra, 2ν-accompanied 2β-decay T1/2, 0ν-accompanied 2β-decay T1/2 lower limit.


2002FU05     Phys.Lett. 531B, 190 (2002)

K.Fushimi, N.Kudomi, S.Yoshida, H.Ejiri, K.Hayashi, T.Kishimoto, K.Kume, H.Kuramoto, K.Matsuoka, H.Ohsumi, K.Takahisa

Limits on Majoron Emitting Neutrinoless Double-Beta Decay of 100Mo

RADIOACTIVITY 100Mo(2β-); measured 0ν-accompanied 2β-decay T1/2 lower limit; deduced coupling constant.

doi: 10.1016/S0370-2693(02)01484-3


2001EJ01     Nucl.Phys. B(Proc.Supp.) S91, 255 (2001)

H.Ejiri

Double Beta Decays and Neutrinos

RADIOACTIVITY 76Ge, 100Mo, 116Cd, 128,130Te, 136Xe(2β-); analyzed data, sensitivity to neutrino mass.

doi: 10.1016/S0920-5632(00)00949-X


2001EJ02     Nucl.Phys. A687, 350c (2001)

H.Ejiri

Nuclear Responses for Neutrinos and Spin Isospin Giant Resonances

doi: 10.1016/S0375-9474(01)00641-8


2001EJ03     Phys.Rev. C63, 065501 (2001)

H.Ejiri, K.Fushimi, K.Hayashi, T.Kishimoto, N.Kudomi, K.Kume, H.Kuramoto, K.Matsuoka, H.Ohsumi, K.Takahisa, S.Yoshida

Limits on the Majorana Neutrino Mass and Right-Handed Weak Currents by Neutrinoless Double β Decay of 100Mo

RADIOACTIVITY 100Mo(2β-); measured neutrinoless 2β decay T1/2 lower limits; deduced neutrino mass limits.

doi: 10.1103/PhysRevC.63.065501


2001EJ04     Pramana 57, 371 (2001)

H.Ejiri

Nuclear Responses for Neutrinos and Neutrino Studies by Double Beta Decays and Inverse Beta Decays


2001FU11     Nucl.Phys. A690, 243c (2001)

Y.Fujita, T.Adachi, G.P.A.Berg, B.A.Brown, H.Ejiri, H.Fujimura, H.Fujita, M.Fujiwara, K.Hara, M.N.Harakeh, K.Hatanaka, F.Hofmann, J.Kamiya, K.Katori, T.Kawabata, S.Mizutori, P.von Neumann-Cosel, T.Noro, B.Reitz, A.Richter, Y.Shimbara, T.Shinada, H.Ueno, M.Yoshifuku, M.Yosoi

Decomposition of M1 Transitions into Isoscalar and Isovector, Spin and Orbital Contributions

NUCLEAR REACTIONS 24Mg, 28Si, 27Al(3He, t), E=150 MeV; analyzed B(M1), B(GT). 24Mg, 28Si, 27Al deduced orbital contributions to M1 strengths.

doi: 10.1016/S0375-9474(01)00950-2


2001JA10     Nucl.Phys. A687, 270c (2001)

J.Janecke, H.Akimune, H.Ejiri, R.Fox, Y.Fujita, M.Fujiwara, M.B.Greenfield, M.N.Harakeh, R.Hazama, T.Inomata, N.Kudomi, K.Pham, D.A.Roberts, A.Tamii, M.Tanaka, H.Toyokawa, M.Yosoi

Direct and Statistical Proton Decay from Isovector Giant Resonances in 90Nb

NUCLEAR REACTIONS 90Zr(3He, t), E=150 MeV; measured σ at small angles, Ep, (proton)(triton)-coin. 90Nb deduced 1+ level energy, isobaric analog state, Gamow-Teller spin resonances, spin-dipole resonances parameters. Statistical model calculations.

doi: 10.1016/S0375-9474(01)00631-5


2000AJ02     Phys.Rev.Lett. 84, 4052 (2000)

S.Ajimura, K.Ikeda, M.Ishikawa, T.Kishimoto, A.Okusu, N.Shinkai, Y.Tanaka, H.Ejiri, T.Nakano, K.Manabe, T.Nagae, H.Noumi, M.Sekimoto, T.Shibata, O.Hashimoto, K.Maeda, T.Takahashi, T.Hasegawa, H.Bhang, Y.D.Kim, H.Park, M.Youn

Asymmetry in the Nonmesonic Weak Decay of Polarized Λ5He Hypernuclei

NUCLEAR REACTIONS 6Li(π+, K+), E not given; measured pion, proton spectra, asymmetry following hypernucleus decay. 5He deduced hypernucleus asymmetry parameter for nonmesonic decay.

doi: 10.1103/PhysRevLett.84.4052


2000AJ03     Nucl.Phys. A663-664, 493c (2000)

S.Ajimura, H.Bhang, H.Ejiri, T.Hasegawa, O.Hashimoto, M.Ishikawa, K.Ikeda, Y.Kim, T.Kishimoto, K.Maeda, K.Manabe, T.Nagae, T.Nakano, H.Noumi, A.Okusu, H.Park, M.Sekimoto, T.Shibata, N.Shinkai, T.Takahashi, Y.Tanaka, M.Youn

Asymmetry in Nonmesonic Decay of Polarized Λ5He Hypernucleus

NUCLEAR REACTIONS 6Li(π+, K+p), E at 1.05 GeV/c; measured excitation energy spectra, asymmetry; deduced polarized hypernucleus decay features.

doi: 10.1016/S0375-9474(99)00639-9


2000AJ04     Nucl.Phys. A670, 285c (2000)

S.Ajimura, H.Bhang, H.Ejiri, T.Hasegawa, O.Hashimoto, M.Ishikawa, K.Ikeda, Y.Kim, T.Kishimoto, K.Maeda, K.Manabe, T.Nagae, T.Nakano, H.Noumi, A.Okusu, H.Park, M.Sekimoto, T.Shibata, N.Shinkai, T.Takahashi, Y.Tanaka, M.Youn

Asymmetric Weak Decay of Polarized Hypernuclei

NUCLEAR REACTIONS 6Li(π+, K+p), E at 1.05 GeV/c; measured excitation energy spectra, asymmetry; deduced polarized hypernucleus decay features.

doi: 10.1016/S0375-9474(00)00114-7


2000EJ01     Phys.Rev.Lett. 85, 2917 (2000)

H.Ejiri, J.Engel, R.Hazama, P.Krastev, N.Kudomi, R.G.H.Robertson

Spectroscopy of Double-Beta and Inverse-Beta Decays from 100Mo for Neutrinos

RADIOACTIVITY 100Mo(2β-); calculated 0ν-, 2ν-accompanied 2β decay spectra, correlation features. Detector design, solar neutrino detection discussed.

doi: 10.1103/PhysRevLett.85.2917


2000EJ02     Phys.Rep. 338, 265 (2000)

H.Ejiri

Nuclear Spin Isospin Responses for Low-Energy Neutrons

doi: 10.1016/S0370-1573(00)00044-2


2000FU13     Phys.Rev. C62, 044314 (2000)

Y.Fujita, B.A.Brown, H.Ejiri, K.Katori, S.Mizutori, H.Ueno

Separation of Isoscalar, Isovector, Orbital, and Spin Contributions in M1 Transitions in Mirror Nuclei

NUCLEAR STRUCTURE 27Al, 27Si; calculated transitions B(M1); deduced isovector, isoscalar, orbital, spin components. Shell model, comparisons with data.

doi: 10.1103/PhysRevC.62.044314


2000FU15     Phys.Rev.Lett. 85, 4442 (2000)

M.Fujiwara, H.Akimune, A.M.van den Berg, M.Cribier, I.Daito, H.Ejiri, H.Fujimura, Y.Fujita, C.D.Goodman, K.Hara, M.N.Harakeh, F.Ihara, T.Ishikawa, J.Janecke, T.Kawabata, R.S.Raghavan, K.Schwarz, M.Tanaka, T.Yamanaka, M.Yosoi, R.G.T.Zegers

Gamow-Teller Strengths of the Inverse Beta Transition 176Yb → 176Lu for Spectroscopy of Proton-Proton and Other Sub-MeV Solar Neutrinos

NUCLEAR REACTIONS 176Yb(3He, t), E=450 MeV; measured triton spectra; deduced Gamow-Teller transition strengths. 176Lu deduced levels, IAS excitation strength. Application to solar neutrino detection discussed.

doi: 10.1103/PhysRevLett.85.4442


2000HA25     Nucl.Phys. A663-664, 1087c (2000)

K.Hatanaka, S.Ninomiya, M.Nomachi, H.Ejiri

Design Study of a 10 GeV Electron Accumulator Ring for the PEARL Project at RCNP

doi: 10.1016/S0375-9474(99)00783-6


2000KU21     Nucl.Phys. B(Proc.Supp.) S87, 301 (2000)

N.Kudomi, H.Ejiri, K.Fushimi, K.Hayashi, R.Hazama, T.Kishimoto, K.Kume, H.Kuramoto, T.Matsuoka, H.Ohsumi, K.Takahisa, Y.Tsujimoto, S.Yoshida

Double Beta Decay of 100Mo by ELEGANT V at Oto Cosmo Observatory

RADIOACTIVITY 100Mo(2β-); measured 0ν-accompanied 2β-decay T1/2 lower limit; deduced neutrino mass limits.

doi: 10.1016/S0920-5632(00)00686-1


2000NA15     Nucl.Phys. A670, 332c (2000)

T.Nakano, J.K.Ahn, H.Ejiri, M.Fujiwara, T.Hotta, N.Matsuoka, T.Matsumura, T.Mibe, M.Nomachi, H.Toki, C.W.Wang, S.C.Wang, H.Kawai, T.Ooba, T.Iwata, Y.Miyachi, T.Toyama, A.Wakai, K.Hicks, H.Akimune, Y.Asano, Y.Sugaya, S.Date, N.Kumagai, Y.Ohashi, H.Toyokawa, K.Imai, M.Yosoi, A.Ichikawa, T.Kishimoto, A.Sakaguchi, M.Sumihama, S.Makino, H.Shimizu

Experiment at SPring-8

doi: 10.1016/S0375-9474(00)00124-X


2000OG02     Nucl.Phys. A663-664, 869c (2000)

I.Ogawa, T.Kishimoto, R.Hazama, S.Ajimura, K.Matsuoka, N.Suzuki, T.Nitta, H.Miyawaki, S.Shiomi, Y.Tanaka, H.Ejiri, N.Kudomi, K.Kume, H.Ohsumi, K.Fushimi

Dark Matter Search with CaF2 Scintillators in Osaka

doi: 10.1016/S0375-9474(99)00734-4


1999EJ01     Nucl.Phys. A649, 288c (1999)

H.Ejiri

Spin Isospin Giant Resonances and Neutrino Nuclear Responses

doi: 10.1016/S0375-9474(99)00074-3


1998AJ01     Phys.Rev.Lett. 80, 3471 (1998)

S.Ajimura, M.Ishikawa, K.Ikeda, T.Kishimoto, A.Okusu, N.Shinkai, Y.Tanaka, H.Ejiri, T.Nakano, T.Nagae, H.Noumi, K.Manabe, M.Sekimoto, T.Shibata, O.Hashimoto, K.Maeda, T.Takahashi, T.Hasegawa, H.Bhang, H.Park, Y.Kim, M.Youn, T.Motoba, K.Itonaga

Polarization of (Λ)5He Produced by the (π+, K+) Reaction

NUCLEAR REACTIONS 6Li(π+, K+), (π+, K+p), E at 1.05 GeV/c; measured excitation energy spectra, asymmetry; deduced 5He hypernucleus formation, polarization.

doi: 10.1103/PhysRevLett.80.3471


1998EJ02     Nucl.Phys. A629, 487c (1998)

H.Ejiri

Neutrino Nuclear Responses and Neutrino Masses in Inverse Beta and Double Beta Decays

doi: 10.1016/S0375-9474(97)00727-6


1998EJ03     Phys.Lett. 433B, 257 (1998)

H.Ejiri, H.Akimune, Y.Arimoto, I.Daito, H.Fujimura, Y.Fujita, M.Fujiwara, K.Fushimi, M.B.Greenfield, M.N.Harakeh, F.Ihara, T.Inomata, K.Ishibashi, J.Janecke, H.Kohri, S.Nakayama, C.Samanta, A.Tamii, M.Tanaka, H.Toyokawa, M.Yosoi

Spin-Isospin Responses of 71Ga for Solar Neutrinos Studied by 71Ga(3He, tγ)71Ge Reaction

NUCLEAR REACTIONS 71Ga(3He, t), E=450 MeV; measured Eγ, Iγ, forward-angle triton spectra, tγ-coin. 71Ge deduced γ-decay branching from levels above neutron threshold. Implications for solar neutrino absorption rates.

doi: 10.1016/S0370-2693(98)00673-X


1998EJ05     Prog.Part.Nucl.Phys. 40, 307 (1998)

H.Ejiri

Neutrinos and Nuclear Responses in Nuclear Double-β and Inverse-β Processes

NUCLEAR REACTIONS 71Ga, 100Mo(3He, t), E=450 MeV; analyzed triton spectra; deduced spin isospin strengths for neutrino capture, related features.

RADIOACTIVITY 100Mo(2β-); analyzed 2ν accompanied 2β decay sum spectra; deduced supersymmetry parameters.

doi: 10.1016/S0146-6410(98)00040-4


1998HO04     Nucl.Phys. A629, 160c (1998)

A.Hosaka, H.Toki, H.Ejiri

Baryon Resonances in a Deformed Oscillator Quark Model

doi: 10.1016/S0375-9474(97)00681-7


1998IN02     Phys.Rev. C57, 3153 (1998)

T.Inomata, H.Akimune, I.Daito, H.Ejiri, H.Fujimura, Y.Fujita, M.Fujiwara, M.N.Harakeh, K.Ishibashi, H.Kohri, N.Matsuoka, S.Nakayama, A.Tamii, M.Tanaka, H.Toyokawa, M.Yoshimura, M.Yosoi

Particle Decays from 12B and 12N Mirror Nuclei

NUCLEAR REACTIONS 12C(d, 2p), E=200 MeV; 12C(3He, t), E=450 MeV; measured excitation energy spectra, proton, neutron σ(θ) following residual nucleus decay. 12B, 12N deduced spin-isospin excitation modes, particle decay features.

doi: 10.1103/PhysRevC.57.3153
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1703.


1998KU09     Nucl.Phys. A629, 527c (1998)

N.Kudomi, H.Ejiri, K.Fushimi, K.Hayashi, R.Hazama, T.Kishimoto, M.Komori, K.Kume, G.Kunitomi, T.Matsuoka, H.Miyawaki, K.Nagata, H.Ohsumi, K.Okada, T.Shima, S.Shiomi, K.Takahisa, J.Tanaka, K.Tasaka, T.Watanabe

Double Beta Decays and ELEGANT V and VI at Oto Cosmo Observatory

RADIOACTIVITY 100Mo(2β); measured 0ν-associated T1/2 lower limits.

doi: 10.1016/S0375-9474(97)00732-X


1998NA09     Nucl.Phys. A629, 559c (1998)

T.Nakano, H.Ejiri, M.Fujiwara, T.Hotta, K.Takanashi, H.Toki, S.Hasegawa, T.Iwata, K.Okamoto, T.Murakami, J.Tamii, K.Imai, K.Maeda, K.Maruyama, S.Date, M.M.Obuti, Y.Ohashi, H.Ohkuma, N.Kumagai

New Projects at SPring-8 with Multi-GeV Polarized Photons

doi: 10.1016/S0375-9474(97)00737-9


1997AK02     Phys.Lett. 394B, 23 (1997); Erratum Phys.Lett. 665B, 424 (2008)

H.Akimune, H.Ejiri, M.Fujiwara, I.Daito, T.Inomata, R.Hazama, A.Tamii, H.Toyokawa, M.Yosoi

GT Strengths Studied by (3He, t) Reactions and Nuclear Matrix Elements for Double Beta Decays

NUCLEAR REACTIONS 100Mo, 116Cd(3He, t), E=450 MeV; measured triton energy spectra. 100Tc, 116In deduced Gamow-Teller strengths. 100Mo, 116Cd deduced 2ν-accompanied 2β-decay matrix elements.

doi: 10.1016/S0370-2693(96)01659-0


1997EJ01     Int.J.Mod.Phys. E6, 1 (1997)

H.Ejiri

Nuclear Spin Responses for Neutrinos in Astroparticle Physics

RADIOACTIVITY 76Ge, 82Se, 96Zr, 100Mo, 116Cd, 128,130Te(2β); analyzed 2ν-accompanied 2β-decay T1/2; deduced 2β-decay matrix elements. 100Tc(β-); analyzed log ft; deduced β-decay matrix element. Othernuclei, other aspects discussed in terms of nuclear spin responses.

NUCLEAR REACTIONS 71Ga, 100Mo(3He, t), E=450 MeV; analyzed σ(Et). 100Tc deduced β-decay associated Gamow-Teller matrix element. 71Ge deduced total Gamow-Teller strength. Other aspects also discussed in terms of nuclear spin responses.

doi: 10.1142/S0218301397000020


1996EJ01     Nucl.Phys. A599, 179c (1996)

H.Ejiri

Double Beta Decays and Spin Isospin Giant Resonances

doi: 10.1016/0375-9474(96)00059-0


1996EJ02     J.Phys.Soc.Jpn. 65, 7 (1996)

H.Ejiri, H.Toki

Nuclear Matrix Elements for Two-Neutrino Double Beta Decays

RADIOACTIVITY 76Se, 82Se, 96Zr, 100Mo, 116Cd, 128,130Te(2β); calculated 2ν-accompanied 2β-decay T1/2 matrix element, decomposition in single β-decays.


1996EJ04     Nucl.Phys. A611, 85 (1996)

H.Ejiri, K.Fushimi, K.Hayashi, R.Hazama, T.Kishimoto, N.Kudomi, K.Kume, K.Nagata, H.Ohsumi, K.Okada, T.Shima, J.Tanaka

Limits on Neutrino-Less Double Beta Decay of 100Mo

RADIOACTIVITY 100Mo(2β); measured 0ν-accompanied 2β-decay T1/2 lower limits; deduced neutrino mass upper limits, other quantities. ELEGANT V system.

doi: 10.1016/S0375-9474(96)00332-6


1996EJ06     Nucl.Phys.(Proc.Suppl.) S48, 229 (1996)

H.Ejiri, K.Fushimi, K.Hayashi, R.Hazama, N.Kudomi, K.Kume, K.Nagata, T.Nitta, H.Ohsumi, K.Okada, T.Shima, K.Shinmyo, J.Tanaka

0νββ Decays of 100Mo by Means of ELEGANT V

RADIOACTIVITY 100Mo(2β); measured 0ν-accompanied 2β-decay T1/2 lower limits. Exclusive measurements.

doi: 10.1016/0920-5632(96)00246-0


1996FU06     Nucl.Phys. A599, 223c (1996)

M.Fujiwara, H.Akimune, I.Daito, H.Ejiri, Y.Fujita, M.B.Greenfield, M.N.Harakeh, T.Inomata, J.Janecke, S.Nakayama, N.Takemura, A.Tamii, M.Tanaka, H.Toyokawa, M.Yosoi

Spin Isospin Resonances in Nuclei

NUCLEAR REACTIONS 100Mo, 116Cd, 114,116,118,120,122,124Sn, 71Ga(3He, t), E=450 MeV; measured 0° triton spectra; deduced solar neutrino capture rate. 71Ge deduced Gamow-Teller transition strength. 12C(3He, pt), E=450 MeV; measured pt-coin. 12C(t, 3He), E=381 MeV; analyzed data. 13N deduced proton decay features.

doi: 10.1016/0375-9474(96)00065-6


1995EJ01     J.Phys.Soc.Jpn. 64, 339 (1995)

H.Ejiri, K.-I.Fushimi, R.Hazama, M.Kawasaki, V.Kouts, N.Kudomi, K.Kume, K.Nagata, H.Ohsumi, K.Okada, H.Sano, T.Senoo, T.Shibata, T.Shima, J.-I.Tanaka, Y.Zdesenko

Double Beta Decays of 116Cd

RADIOACTIVITY 116Cd(2β); measured 2ν-accompanied 2β-decay T1/2, 0ν-accompanied 2β-decay T1/2 upper limit; deduced 2ν-associated β-decay matrix element. Isotopically enriched Cd sample, ultralow-background-detector ELEGANT V.


1995KI03     Phys.Rev. C51, 2233 (1995)

T.Kishimoto, S.Ajimura, H.Ejiri, F.Nakamura, H.Noumi, A.Higashi, G.Inoue, D.R.Gill, L.Lee, A.Olin, S.Yen

(Lambda)-Nucleon Interaction in Nuclei Probed by the Quasifree 12C(π+, K+) Reaction

NUCLEAR REACTIONS 12C(π+, K+), E at 1.05 GeV/c; measured proton, pion yields from weak decay of lambda hypernuclei; deduced lambda-N σ in nuclei. Pauli blocking, Fermi averaging of lambda-N σ features.

doi: 10.1103/PhysRevC.51.2233


1995KI05     Nucl.Phys. A585, 205c (1995)

T.Kishimoto, S.Ajimura, H.Ejiri, K.Ikeda, M.Ishikawa, T.Nakano, A.Okusu, N.Shinkai, Y.Tanaka, T.Hasegawa, O.Hashimoto, T.Nagae, M.Sekimoto, T.Shibata, H.Noumi, K.Manabe, K.Maeda, T.Takahashi, H.Bhang, H.Park, M.Youn

Study of (Lambda)N → NN Processes in Polarized 5He(Lambda)

NUCLEAR REACTIONS 6Li(π+, K+), E at 1.05 GeV/c; measured excitation energy spectra, 5He(Lambda) hypernucleus decay particles asymmetry; deduced non-mesonic decay associated dominant mechanism.

doi: 10.1016/0375-9474(94)00566-6


1995NA27     Nucl.Instrum.Methods Phys.Res. A362, 261 (1995)

K.Nagata, H.Ejiri, K.Hayashi, T.Shima, J.Tanaka

Development of a Thin Drift Chamber for the Double Beta Decay Experiment

RADIOACTIVITY 214Bi(α), (β-); 214Po(α) [from 214Bi(β-decay)]; measured γ spectra, delayed α-spectra; deduced 214Bi contamination in Mo source to be used for 2β-decay studies.

doi: 10.1016/0168-9002(95)00299-5


1995NO06     Phys.Rev. C52, 2936 (1995)

H.Noumi, S.Ajimura, H.Ejiri, A.Higashi, T.Kishimoto, D.R.Gill, L.Lee, A.Olin, T.Fukuda, O.Hashimoto

Hypernuclear Weak Decay of 12C(Λ) and 11B(Λ)

NUCLEAR REACTIONS 12C(π+, K+), E at 1.05 GeV/c; measured spectra; deduced A=11, 12 hypernuclei mesonic, nonmesonic decay branching ratios, width ratios.

doi: 10.1103/PhysRevC.52.2936


1994AJ01     Nucl.Phys. A577, 271c (1994)

S.Ajimura, H.Ejiri, T.Fukuda, D.R.Gill, A.Higashi, G.Inoue, T.Kishimoto, L.Lee, F.Nakamura, H.Noumi, A.Olin, T.Shibata, S.Yen

(Lambda) Hypernuclei by Quasifree (π+, K+) Reaction on 12C

NUCLEAR REACTIONS 12C(π+, K+), E at 1.05 GeV/c; measured proton-gated, ungated spectra; deduced N(Lambda) scattering, hypernucleus formation probabilities.

doi: 10.1016/0375-9474(94)90866-4


1994EJ01     Nucl.Phys. A574, 311c (1994)

H.Ejiri

Hypernuclear Structure

NUCLEAR REACTIONS 12C(K-, π-), E at 0.7-1.5 GeV/c; 28Si(π+, K+), E at 1.04 GeV/c; 89Y(π+, K+), E at 1.05 GeV/c; compiled, reviewed reaction, hypernuclei production data, analyses; deduced relevance to strangeness studies.

doi: 10.1016/0375-9474(94)90052-3


1994EJ02     Nucl.Phys. A577, 399c (1994)

H.Ejiri

Nuclear Spin Isospin Responses in Double Beta Decays and Dark Matter Search

RADIOACTIVITY 76Ge, 100Mo, 116Cd(2β); analyzed 2β-decay data; deduced nuclear spin-isospin responses features. Dark matter search discussed.

doi: 10.1016/0375-9474(94)90887-7


1994FU11     Nucl.Phys. A577, 43c (1994)

M.Fujiwara, H.Akimune, I.Daito, H.Ejiri, Y.Fujita, M.B.Greenfield, M.N.Harakeh, R.Hazama, T.Inomata, J.Janecke, N.Kudomi, K.Kume, S.Nakayama, K.Shinmyo, A.Tamii, M.Tanaka, H.Toyokawa, M.Yosoi

Spin-Isospin Excitations in Nuclei via (3He, t) Reactions at 450 MeV

NUCLEAR REACTIONS 71Ga, 90Zr(3He, t), E=450 MeV; measured triton spectra, θ=0°. 90Nb, 71Ge deduced Gamow-Teller transition strength. Other cases discussed.

doi: 10.1016/0375-9474(94)90832-X


1994HA12     Phys.Rev. C49, 2407 (1994)

R.Hazama, H.Ejiri, K.Fushimi, H.Ohsumi

Limits on Single- and Multinucleon Decays in 127I by Inclusive Measurements of Nuclear γ and X Rays

RADIOACTIVITY 127I; measured γ, X ray-spectra; deduced p-, n-, di-neutron, tri-neutron, tetraneutron decay T1/2 lower limits. Large volume NaI(Tl) detector.

doi: 10.1103/PhysRevC.49.2407


1994KI19     Nucl.Phys. A577, 263c (1994)

T.Kishimoto, S.Ajimura, H.Ejiri, K.Ikeda, M.Ishikawa, T.Nakano, A.Okusu, N.Shinkai, Y.Tanaka, T.Hasegawa, O.Hashimoto, T.Nagae, M.Sekimoto, T.Shibata, H.Noumi, K.Manabe, K.Maeda, T.Takahashi, H.Bhang, H.Park, M.Youn

Spin Polarization and Weak Decay of Polarized (Lambda) Hypernuclei

NUCLEAR REACTIONS 12C(π+, K+), E at 1.05 GeV/c; analyzed data; deduced hypernucleus nonmesonic decay asymmetry vs polarization. Discussed 6Li(π+, K+p) reaction.

doi: 10.1016/0375-9474(94)90865-6


1994KI28     Prog.Theor.Phys.(Kyoto), Suppl. 117, 499 (1994)

T.Kishimoto, H.Ejiri

Weak Decays and Polarization of Λ Hypernuclei

NUCLEAR REACTIONS 12C(π+, K+), E at 1.05 GeV/c; compiled, reviewed data, analyses on this reaction, other aspects of polarized hypernuclei asymmetric weak decays; deduced hypernuclei related Λ-nucleon strong, weak interactions.


1994KU25     Nucl.Phys. A577, 405c (1994)

K.Kume, H.Ejiri, K.Fushimi, R.Hazama, K.Kawasaki, V.Koutz, N.Kudomi, K.Nagata, V.Malishko, H.Ohsumi, K.Okada, H.Sano, T.Senoo, T.Shibata, T.Shima, J.Tanaka, Yu.Zdesenko

Double Beta Decays of 116Cd

RADIOACTIVITY 116Cd(2β); measured 2ν-accompanied 2β-decay T1/2; deduced matrix element, 0ν-accompanied 2β-decay T1/2 lower limit.

doi: 10.1016/0375-9474(94)90888-5


1993EJ01     Phys.Lett. 306B, 218 (1993)

H.Ejiri, H.Toki

Search for Exotic Nuclear Transitions Associated with Nuclear Instability

RADIOACTIVITY 23Na, 127I; measured non-paulian transition spectra; deduced T1/2 lower limit.

doi: 10.1016/0370-2693(93)90071-O


1993EJ02     Phys.Rev. C48, 1442 (1993)

H.Ejiri

Nuclear Deexcitations of Nucleon Holes Associated with Nucleon Decays in Nuclei

NUCLEAR STRUCTURE 16O; calculated individual nucleon decay deexcitation modes branching ratios. Nucleon hole deexcitation based investigation.

doi: 10.1103/PhysRevC.48.1442


1993EJ03     Phys.Lett. 317B, 14 (1993)

H.Ejiri, K.Fushimi, H.Ohsumi

Search for Spin-Coupled Dark Matter by Studying the Axial-Vector Excitation of Nuclei

doi: 10.1016/0370-2693(93)91562-2


1993FU01     Phys.Rev. C47, R425 (1993)

K.Fushimi, H.Ejiri, H.Kinoshita, N.Kudomi, K.Kume, K.Nagata, H.Ohsumi, K.Okada, H.Sano, J.Tanaka

Application of a Large-Volume NaI Scintillator to Search for Dark Matter

RADIOACTIVITY 252Cf(SF); measured neutron spectra; deduced 23Na, 127I light output efficiences. Large volume NaI scintillator, dark matter search, inelastic neutron scattering in I.

doi: 10.1103/PhysRevC.47.R425


1993LE10     Nucl.Instrum.Methods Phys.Res. A327, 287 (1993)

L.Lee, D.R.Gill, A.Olin, S.Yen, S.Ajimura, H.Ejiri, A.Higashi, G.Inoue, T.Kishimoto, T.Nakamura, H.Noumi, T.Fukuda, O.Hashimoto, T.Shibata

An Active Segmented Target for Studying Hypernuclear Production

NUCLEAR REACTIONS 12C(π+, K+), E at 1.05 GeV/c; measured excitation energy spectra, hypernuclei. Active segmented target.

doi: 10.1016/0168-9002(93)90694-D


1993SU35     Phys.Lett. 311B, 357 (1993)

Y.Suzuki, Y.Fukuda, K.S.Hirata, K.Inoue, T.Ishida, T.Kajita, K.Kihara, M.Nakahata, K.Nakamura, A.Sakai, N.Sato, Y.Totsuka, M.Mori, Y.Oyama, A.Suzuki, K.Takahashi, M.Yamada, M.Koshiba, K.Nishijima, T.Kajumura, T.Suda, A.T.Suzuki, K.Miyano, H.Miyata, H.Takei, E.Kodera, Y.Nagashima, M.Takita, H.Yokoyama, K.Kaneyuki, Y.Takeuchi, T.Tanimori, H.Ejiri

Study of Invisible Nucleon Decay, n → νν(ν-bar), and a Forbidden Nuclear Transition in Kamiokande Detector

RADIOACTIVITY 16O; measured forbidden to normal transition relative strength upper limit. Nucleon decay also studied. Kamiokande detector.

doi: 10.1016/0370-2693(93)90582-3


1992AJ01     Phys.Rev.Lett. 68, 2137 (1992)

S.Ajimura, H.Ejiri, A.Higashi, G.Inoue, Y.Iseki, T.Kishimoto, T.Nakamura, H.Noumi, H.Ohsumi, H.Sano, D.R.Gill, L.Lee, A.Olin, S.Yen, T.Fukuda, O.Hashimoto, T.Shibata, M.Nomachi, Y.Kimura, K.Maeda

Polarization of (Lambda) Hyperons Produced by the Quasifree (π+, K+) Reaction on 12C

NUCLEAR REACTIONS 2H, 12C(π+, K+), E at 1.05 GeV/c; measured quasifree lambda hyperon polarization.

doi: 10.1103/PhysRevLett.68.2137


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