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1. Magicity versus superfluidity around $^{28}$O viewed from the study of $^{30}$F

Author

Kahlbow, J., Aumann, T., Sorlin, O., Kondo, Y., Nakamura, T., Nowacki, F., Revel, A., Achouri, N. L., Falou, H. Al, Atar, L., Baba, H., Boretzky, K., Caesar, C., Calvet, D., Chae, H., Chiga, N., Corsi, A., Delaunay, F., Delbart, A., Deshayes, Q., Dombradi, Z., Douma, C. A., Elekes, Z., Gasparic, I., Gheller, J. -M., Gibelin, J., Gillibert, A., Harakeh, M. N., Hirayama, A., Holl, M., Horvat, A., Horvath, A., Hwang, J. W., Isobe, T., Kalantar-Nayestanaki, N., Kawase, S., Kim, S., Kisamori, K., Kobayashi, T., Körper, D., Koyama, S., Kuti, I., Lapoux, V., Lindberg, S., Marques, F. M., Masuoka, S., Mayer, J., Miki, K., Murakami, T., Najafi, M., Nakano, K., Nakatsuka, N., Nilsson, T., Obertelli, A., Orr, N. A., Otsu, H., Ozaki, T., Panin, V., Paschalis, S., Rossi, D. M., Saito, A. T., Saito, T., Sasano, M., Sato, H., Satou, Y., Scheit, H., Schindler, F., Schrock, P., Shikata, M., Shimada, K., Shimizu, Y., Simon, H., Sohler, D., Stuhl, L., Takeuchi, S., Tanaka, M., Thoennessen, M., Törnqvist, H., Togano, Y., Tomai, T., Tscheuschner, J., Tsubota, J., Uesaka, T., Wang, H., Yang, Z., Yasuda, M., and Yoneda, K.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

The neutron-rich unbound fluorine isotope $^{30}$F$_{21}$ has been observed for the first time by measuring its neutron decay at the SAMURAI spectrometer (RIBF, RIKEN) in the quasi-free proton knockout reaction of $^{31}$Ne nuclei at 235 MeV/nucleon. The mass and thus one-neutron-separation energy of $^{30}$F has been determined to be $S_n = -472\pm 58 \mathrm{(stat.)} \pm 33 \mathrm{(sys.)}$ keV from the measurement of its invariant-mass spectrum. The absence of a sharp drop in $S_n$($^{30}$F) shows that the ``magic'' $N=20$ shell gap is not restored close to $^{28}$O, which is in agreement with our shell-model calculations that predict a near degeneracy between the neutron $d$ and $fp$ orbitals, with the $1p_{3/2}$ and $1p_{1/2}$ orbitals becoming more bound than the $0f_{7/2}$ one. This degeneracy and reordering of orbitals has two potential consequences: $^{28}$O behaves like a strongly superfluid nucleus with neutron pairs scattering across shells, and both $^{29,31}$F appear to be good two-neutron halo-nucleus candidates., Comment: 9 pages, 2 figures, accepted for publication in Physical Review Letters

Published
2024
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2. Patients with osteosarcoma and soft tissue sarcoma might become 'cancer refugees' in some Japanese regional cities

Author

Yamane H, Kunisada T, Ozaki T, Ochi N, Honda Y, Nagasaki Y, Nakagawa N, Yamagishi T, Nakanishi H, and Takigawa N

Subjects
Osteosarcoma, soft tissue sarcoma, rare cancer, cancer refugee, Neoplasms. Tumors. Oncology. Including cancer and carcinogens, RC254-282
Abstract

Hiromichi Yamane,1 Toshiyuki Kunisada,2 Toshifumi Ozaki,2 Nobuaki Ochi,1 Yoshihiro Honda,1 Yasunari Nagasaki,1 Nozomu Nakagawa,1 Tomoko Yamagishi,1 Hidekazu Nakanishi,1 Nagio Takigawa1 1Department of General Internal Medicine 4, Kawasaki Medical School, Okayama, Japan; 2Department of Orthopedics, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, Japan Purpose: “Rare cancer” is defined as malignancy with a disease prevalence (age-adjusted incidence rate) of less than six per 100,000 population. Proper treatments which these patients need cannot always be performed unless they find dedicated facilities. Patients tend to be desperate, searching for advice and care. Thus, they are called “cancer refugees”. Osteosarcoma and soft tissue sarcoma (OS/STS) are representative rare cancers in Japan. We conducted a retrospective analysis of patients with OS/STS to improve the current treatment modalities in a Japanese regional city. Patients and methods: Twenty-one patients with OS/STS who were hospitalized to receive standard chemotherapy or palliative treatment were enrolled between October 2011 and January 2017. Patients with non-Hodgkin’s lymphoma (NHL) and advanced cancer who were treated in the palliative care unit (PCU) of the Kawasaki Medical School General Medical Center were recruited as the control groups. We analyzed the difference in residential area between patients with OS/STS and the control groups. Results: Approximately one-third of patients with OS/STS were referred from hospitals outside of Okayama prefecture. The ratio of patients with OS/STS referred from Okayama city and/or the same medical administration area of Okayama prefecture was lower than that of patients with NHL and advanced cancer who were treated in the PCU. Conclusion: Because the medical environment of patients with OS/STS in Japanese local cities has not been consolidated, completing medical care within the patient’s own medical administration area is difficult. Thus, some patients with OS/STS may become “cancer refugees” who are unable to receive standard therapy near their residence. Keywords: osteosarcoma, soft tissue sarcoma, rare cancer, cancer refugee

Published
2018

3. Mass, spectroscopy and two-neutron decay of $^{16}$Be

Author

Monteagudo, B., Marqués, F. M., Gibelin, J., Orr, N. A., Corsi, A., Kubota, Y., Casal, J., Gómez-Camacho, J., Authelet, G., Baba, H., Caesar, C., Calvet, D., Delbart, A., Dozono, M., Feng, J., Flavigny, F., Gheller, J. -M., Giganon, A., Gillibert, A., Hasegawa, K., Isobe, T., Kanaya, Y., Kawakami, S., Kim, D., Kiyokawa, Y., Kobayashi, M., Kobayashi, N., Kobayashi, T., Kondo, Y., Korkulu, Z., Koyama, S., Lapoux, V., Maeda, Y., Motobayashi, T., Miyazaki, T., Nakamura, T., Nakatsuka, N., Nishio, Y., Obertelli, A., Ohkura, A., Ota, S., Otsu, H., Ozaki, T., Panin, V., Paschalis, S., Pollacco, E. C., Reichert, S., Rousse, J. -Y., Saito, A. T., Sakaguchi, S., Sako, M., Santamaria, C., Sasano, M., Sato, H., Shikata, M., Shimizu, Y., Shindo, Y., Stuhl, L., Sumikama, T., Sun, Y. L., Tabata, M., Togano, Y., Tsubota, J., Uesaka, T., Yang, Z. H., Yasuda, J., Yoneda, K., and Zenihiro, J.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

The structure and decay of the most neutron-rich beryllium isotope, $^{16}$Be, has been investigated following proton knockout from a high-energy $^{17}$B beam. Two relatively narrow resonances were observed for the first time, with energies of $0.84(3)$ and $2.15(5)$ MeV above the two-neutron decay threshold and widths of $0.32(8)$ and $0.95(15)$ MeV respectively. These were assigned to be the ground ($J^{\pi}=0^+$) and first excited ($2^+$) state, with $E_x=1.31(6)$ MeV. The mass excess of $^{16}$Be was thus deduced to be $56.93(13)$ MeV, some $0.5$ MeV more bound than the only previous measurement. Both states were observed to decay by direct two-neutron emission. Calculations incorporating the evolution of the wavefunction during the decay as a genuine three-body process reproduced the principal characteristics of the neutron-neutron energy spectra for both levels, indicating that the ground state exhibits a strong spatially compact dineutron component, while the 2$^+$ level presents a far more diffuse neutron-neutron distribution.

Published
2024

4. Searching for universality of dineutron correlation at the surface of Borromean nuclei

Author

Corsi, A., Kubota, Y., Casal, J., Gomez-Ramos, M., Moro, A. M., Authelet, G., Baba, H., Caesar, C., Calvet, D., Delbart, A., Dozono, M., Feng, J., Flavigny, F., Gheller, J. -M., Gibelin, J., Giganon, A., Gillibert, A., Hasegawa, K., Isobe, T., Kanaya, Y., Kawakami, S., Kim, D., Kiyokawa, Y., Kobayashi, M., Kobayashi, N., Kobayashi, T., Kondo, Y., Korkulu, Z., Koyama, S., Lapoux, V., Maeda, Y., Marqués, F. M., Motobayashi, T., Miyazaki, T., Nakamura, T., Nakatsuka, N., Nishio, Y., Obertelli, A., Ohkura, A., Orr, N. A., Ota, S., Otsu, H., Ozaki, T., Panin, V., Paschalis, S., Pollacco, E. C., Reichert, S., Rousse, J. -Y., Saito, A. T., Sakaguchi, S., Sako, M., Santamaria, C., Sasano, M., Sato, H., Shikata, M., Shimizu, Y., Shindo, Y., Stuhl, L., Sumikama, T., Sun, Y. L., Tabata, M., Togano, Y., Tsubota, J., Uesaka, T., Yang, Z. H., Yasuda, J., Yoneda, K., and Zenihiro, J.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

The dineutron correlation is systematically studied in three different Borromean nuclei near the neutron dripline, 11Li, 14Be and 17B, via the (p, pn) knockout reaction measured at the RIBF facility in RIKEN. For the three nuclei, the correlation angle between the valence neutrons is found to be largest in the same range of intrinsic momenta, which can be associated to the nuclear surface. This result reinforces the prediction that the formation of the dineutron is universal in environments with low neutron density, such as the surface of neutron-rich Borromean nuclei.

Published
2023
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5. Intruder configurations in $^{29}$Ne at the transition into the island of inversion: Detailed structure study of $^{28}$Ne

Author

Wang, H., Yasuda, M., Kondo, Y., Nakamura, T., Tostevin, J. A., Ogata, K., Otsuka, T., Poves, A., Shimizu, N., Yoshida, K., Achouri, N. L., Falou, H. Al, Atar, L., Aumann, T., Baba, H., Boretzky, K., Caesar, C., Calvet, D., Chae, H., Chiga, N., Corsi, A., Crawford, H. L., Delaunay, F., Delbart, A., Deshayes, Q., Dombrádi, Zs., Douma, C., Elekes, Z., Fallon, P., Gašparić, I., Gheller, J. -M., Gibelin, J., Gillibert, A., Harakeh, M. N., Hirayama, A., Hoffman, C. R., Holl, M., Horvat, A., Horváth, Á., Hwang, J. W., Isobe, T., Kahlbow, J., Kalantar-Nayestanaki, N., Kawase, S., Kim, S., Kisamori, K., Kobayashi, T., Körper, D., Koyama, S., Kuti, I., Lapoux, V., Lindberg, S., Marqués, F. M., Masuoka, S., Mayer, J., Miki, K., Murakami, T., Najafi, M. A., Nakano, K., Nakatsuka, N., Nilsson, T., Obertelli, A., Santos, F. de Oliveira, Orr, N. A., Otsu, H., Ozaki, T., Panin, V., Paschalis, S., Revel, A., Rossi, D., Saito, A. T., Saito, T., Sasano, M., Sato, H., Satou, Y., Scheit, H., Schindler, F., Schrock, P., Shikata, M., Shimizu, Y., Simon, H., Sohler, D., Sorlin, O., Stuhl, L., Takeuchi, S., Tanaka, M., Thoennessen, M., Törnqvist, H., Togano, Y., Tomai, T., Tscheuschner, J., Tsubota, J., Uesaka, T., Yang, Z., and Yoneda, K.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

Detailed $\gamma$-ray spectroscopy of the exotic neon isotope $^{28}$Ne has been performed for the first time using the one-neutron removal reaction from $^{29}$Ne on a liquid hydrogen target at 240~MeV/nucleon. Based on an analysis of parallel momentum distributions, a level scheme with spin-parity assignments has been constructed for $^{28}$Ne and the negative-parity states are identified for the first time. The measured partial cross sections and momentum distributions reveal a significant intruder $p$-wave strength providing evidence of the breakdown of the $N=20$ and $N=28$ shell gaps. Only a weak, possible $f$-wave strength was observed to bound final states. Large-scale shell-model calculations with different effective interactions do not reproduce the large $p$-wave and small $f$-wave strength observed experimentally, indicating an ongoing challenge for a complete theoretical description of the transition into the island of inversion along the Ne isotopic chain.

Published
2023
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6. Intruder configurations in 29Ne at the transition into the island of inversion: Detailed structure study of 28Ne

Author

Wang, H, Yasuda, M, Kondo, Y, Nakamura, T, Tostevin, JA, Ogata, K, Otsuka, T, Poves, A, Shimizu, N, Yoshida, K, Achouri, NL, Al Falou, H, Atar, L, Aumann, T, Baba, H, Boretzky, K, Caesar, C, Calvet, D, Chae, H, Chiga, N, Corsi, A, Crawford, HL, Delaunay, F, Delbart, A, Deshayes, Q, Dombrádi, Zs, Douma, C, Elekes, Z, Fallon, P, Gašparić, I, Gheller, J-M, Gibelin, J, Gillibert, A, Harakeh, MN, Hirayama, A, Hoffman, CR, Holl, M, Horvat, A, Horváth, Á, Hwang, JW, Isobe, T, Kahlbow, J, Kalantar-Nayestanaki, N, Kawase, S, Kim, S, Kisamori, K, Kobayashi, T, Körper, D, Koyama, S, Kuti, I, Lapoux, V, Lindberg, S, Marqués, FM, Masuoka, S, Mayer, J, Miki, K, Murakami, T, Najafi, MA, Nakano, K, Nakatsuka, N, Nilsson, T, Obertelli, A, Orr, NA, Otsu, H, Ozaki, T, Panin, V, Paschalis, S, Revel, A, Rossi, D, Saito, AT, Saito, T, Sasano, M, Sato, H, Satou, Y, Scheit, H, Schindler, F, Schrock, P, Shikata, M, Shimizu, Y, Simon, H, Sohler, D, Sorlin, O, Stuhl, L, Takeuchi, S, Tanaka, M, Thoennessen, M, Törnqvist, H, Togano, Y, Tomai, T, Tscheuschner, J, Tsubota, J, Uesaka, T, Yang, Z, and Yoneda, K

Subjects
Nuclear and Plasma Physics, Synchrotrons and Accelerators, Physical Sciences, Mathematical Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Nuclear & Particles Physics, Mathematical sciences, Physical sciences
Abstract

Detailed γ-ray spectroscopy of the exotic neon isotope 28Ne has been performed for the first time using the one-neutron removal reaction from 29Ne on a liquid hydrogen target at 240 MeV/nucleon. Based on an analysis of parallel momentum distributions, a level scheme with spin-parity assignments has been constructed for 28Ne and the negative-parity states are identified for the first time. The measured partial cross sections and momentum distributions reveal a significant intruder p-wave strength providing evidence of the breakdown of the N=20 and N=28 shell gaps. Only a weak, possible f-wave strength was observed to bound final states. Large-scale shell-model calculations with different effective interactions do not reproduce the large p-wave and small f-wave strength observed experimentally, indicating an ongoing challenge for a complete theoretical description of the transition into the island of inversion along the Ne isotopic chain.

Published
2023

7. Enhanced in vivo osteogenesis by nanocarrier-fused bone morphogenetic protein-4

Author

Shiozaki Y, Kitajima T, Mazaki T, Yoshida A, Tanaka M, Umezawa A, Nakamura M, Yoshida Y, Ito Y, Ozaki T, and Matsukawa A

Subjects
Medicine (General), R5-920
Abstract

Yasuyuki Shiozaki,1,2 Takashi Kitajima,4 Tetsuro Mazaki,1,2 Aki Yoshida,1 Masato Tanaka,1 Akihiro Umezawa,5 Mariko Nakamura,6 Yasuhiro Yoshida,3 Yoshihiro Ito,4 Toshifumi Ozaki,1 Akihiro Matsukawa2 1Department of Orthopedic Surgery, Okayama University, Okayama, Okayama, Japan; 2Department of Pathology and Experimental Medicine, Okayama University, Okayama, Okayama, Japan; 3Department of Biomaterials, Graduate School of Medical, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama, Okayama, Japan; 4Nano Medical Engineering Laboratory, RIKEN, Wako, Saitama, Japan; 5National Research Institute for Child Health and Development, Okura, Tokyo, Japan; 6Department of Health and Welfare Program, Kibi International University Junior College, Takahashi, Okayama, Japan Purpose: Bone defects and nonunions are major clinical skeletal problems. Growth factors are commonly used to promote bone regeneration; however, the clinical impact is limited because the factors do not last long at a given site. The introduction of tissue engineering aimed to deter the diffusion of these factors is a promising therapeutic strategy. The purpose of the present study was to evaluate the in vivo osteogenic capability of an engineered bone morphogenetic protein-4 (BMP4) fusion protein. Methods: BMP4 was fused with a nanosized carrier, collagen-binding domain (CBD), derived from fibronectin. The stability of the CBD-BMP4 fusion protein was examined in vitro and in vivo. Osteogenic effects of CBD-BMP4 were evaluated by computer tomography after intramedullary injection without a collagen–sponge scaffold. Recombinant BMP-4, CBD, or vehicle were used as controls. Expressions of bone-related genes and growth factors were compared among the groups. Osteogenesis induced by CBD-BMP4, BMP4, and CBD was also assessed in a bone-defect model. Results: In vitro, CBD-BMP4 was retained in a collagen gel for at least 7 days while BMP4 alone was released within 3 hours. In vivo, CBD-BMP4 remained at the given site for at least 2 weeks, both with or without a collagen–sponge scaffold, while BMP4 disappeared from the site within 3 days after injection. CBD-BMP4 induced better bone formation than BMP4 did alone, CBD alone, and vehicle after the intramedullary injection into the mouse femur. Bone-related genes and growth factors were expressed at higher levels in CBD-BMP4-treated mice than in all other groups, including BMP4-treated mice. Finally, CBD-BMP4 potentiated more bone formation than did controls, including BMP4 alone, when applied to cranial bone defects without a collagen scaffold. Conclusion: Altogether, nanocarrier-CBD enhanced the retention of BMP4 in the bone, thereby promoting augmented osteogenic responses in the absence of a scaffold. These results suggest that CBD-BMP4 may be clinically useful in facilitating bone formation. Keywords: BMP4, bone repair, bone tissue engineering, osteogenesis

Published
2013

9. Border of the Island of Inversion: Unbound states in $^{29}$Ne

Author

Holl, M., Lindberg, S., Heinz, A., Kondo, Y., Nakamura, T., Tostevin, J. A., Wang, H., Nilsson, T., Achouri, N. L., Falou, H. Al, Atar, L., Aumann, T., Baba, H., Boretzky, K., Caesar, C., Calvet, D., Chae, H., Chiga, N., Corsi, A., Crawford, H. L., Delaunay, F., Delbart, A., Deshayes, Q., Fernández, P. Díaz, Dombrádi, Z., Douma, C. A., Elekes, 13 Z., Fallon, P., Gašparić, I., Gheller, J. -M., Gibelin, J., Gillibert, A., Harakeh, M. N., Hirayama, A., Hoffman, C. R., Horvat, A., Horváth, Á., Hwang, J. W., Isobe, T., Kahlbow, J., Kalantar-Nayestanaki, N., Kawase, S., Kim, S., Kisamori, K., Kobayashi, T., Körper, D., Koyama, S., Kuti, I., Lapoux, V., Marqués, F. M., Masuoka, S., Mayer, J., Miki, K., Murakami, T., Najafi, M., Nakano, K., Nakatsuka, N., Obertelli, A., Santos, F. de Oliveira, Orr, N. A., Otsu, H., Ozaki, T., Panin, V., Paschalis, S., Revel, A., Rossi, D., Saito, A. T., Saito, T. Y., Sasano, M., Sato, H., Satou, Y., Scheit, H., Schindler, F., Schrock, P., Shikata, M., Shimizu, Y., Simon, H., Sohler, D., Sorlin, O., Stuhl, L., Takeuchi, S., Tanaka, M., Thoennessen, M., Törnqvist, H., Togano, Y., Tomai, T., Tscheuschner, J., Tsubota, J., Uesaka, T., Yang, Z., Yasuda, M., and Yoneda, K.

Subjects
Nuclear Experiment
Abstract

The nucleus $^{29}$Ne is situated at the border of the island of inversion. Despite significant efforts, no bound low-lying intruder $f_{7/2}$-state, which would place $^{29}$Ne firmly inside the island of inversion, has yet been observed. Here, the first investigation of unbound states of $^{29}$Ne is reported. The states were populated in $^{30}\mathrm{Ne}(p,pn)$ and $^{30}\mathrm{Na}(p,2p)$ reactions at a beam energy of around $230$ MeV/nucleon, and analyzed in terms of their resonance properties, partial cross sections and momentum distributions. The momentum distributions are compared to calculations using the eikonal, direct reaction model, allowing $\ell$-assignments for the observed states. The lowest-lying resonance at an excitation energy of 1.48(4) MeV shows clear signs of a significant $\ell$=3-component, giving first evidence for $f_{7/2}$ single particle strength in $^{29}$Ne. The excitation energies and strengths of the observed states are compared to shell-model calculations using the sdpf-u-mix interaction, Comment: 12 pages, 14 figures, accepted for publication in Physical Review C

Published
2022
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11. Border of the island of inversion: Unbound states in Ne29

Author

Holl, M, Lindberg, S, Heinz, A, Kondo, Y, Nakamura, T, Tostevin, JA, Wang, H, Nilsson, T, Achouri, NL, Al Falou, H, Atar, L, Aumann, T, Baba, H, Boretzky, K, Caesar, C, Calvet, D, Chae, H, Chiga, N, Corsi, A, Crawford, HL, Delaunay, F, Delbart, A, Deshayes, Q, Fernández, P Díaz, Dombrádi, Z, Douma, CA, Elekes, Z, Fallon, P, Gašparić, I, Gheller, J-M, Gibelin, J, Gillibert, A, Harakeh, MN, Hirayama, A, Hoffman, CR, Horvat, A, Horváth, Á, Hwang, JW, Isobe, T, Kahlbow, J, Kalantar-Nayestanaki, N, Kawase, S, Kim, S, Kisamori, K, Kobayashi, T, Körper, D, Koyama, S, Kuti, I, Lapoux, V, Marqués, FM, Masuoka, S, Mayer, J, Miki, K, Murakami, T, Najafi, M, Nakano, K, Nakatsuka, N, Obertelli, A, de Oliveira Santos, F, Orr, NA, Otsu, H, Ozaki, T, Panin, V, Paschalis, S, Revel, A, Rossi, D, Saito, AT, Saito, TY, Sasano, M, Sato, H, Satou, Y, Scheit, H, Schindler, F, Schrock, P, Shikata, M, Shimizu, Y, Simon, H, Sohler, D, Sorlin, O, Stuhl, L, Takeuchi, S, Tanaka, M, Thoennessen, M, Törnqvist, H, Togano, Y, Tomai, T, Tscheuschner, J, Tsubota, J, Uesaka, T, Yang, Z, Yasuda, M, and Yoneda, K

Subjects
Nuclear and Plasma Physics, Synchrotrons and Accelerators, Physical Sciences, Nuclear and plasma physics
Abstract

The nucleus Ne29 is situated at the border of the island of inversion. Despite significant efforts, no bound low-lying intruder f7/2 state, which would place Ne29 firmly inside the island of inversion, has yet been observed. Here, the first investigation of unbound states of Ne29 is reported. The states were populated in Ne30(p,pn) and Na30(p,2p) reactions at a beam energy of around 230 MeV/nucleon, and analyzed in terms of their resonance properties, partial cross sections, and momentum distributions. The momentum distributions are compared to calculations using the eikonal, direct reaction model, allowing ℓ assignments for the observed states. The lowest-lying resonance at an excitation energy of 1.48(4) MeV shows clear signs of a significant ℓ=3 component, giving first evidence for f7/2 single particle strength in Ne29. The excitation energies and strengths of the observed states are compared to shell-model calculations using the sdpf-u-mix interaction.

Published
2022

12. First observation of 28O

Author

Kondo, Y., Achouri, N. L., Falou, H. Al, Atar, L., Aumann, T., Baba, H., Boretzky, K., Caesar, C., Calvet, D., Chae, H., Chiga, N., Corsi, A., Delaunay, F., Delbart, A., Deshayes, Q., Dombrádi, Zs., Douma, C. A., Ekström, A., Elekes, Z., Forssén, C., Gašparić, I., Gheller, J.-M., Gibelin, J., Gillibert, A., Hagen, G., Harakeh, M. N., Hirayama, A., Hoffman, C. R., Holl, M., Horvat, A., Horváth, Á., Hwang, J. W., Isobe, T., Jiang, W. G., Kahlbow, J., Kalantar-Nayestanaki, N., Kawase, S., Kim, S., Kisamori, K., Kobayashi, T., Körper, D., Koyama, S., Kuti, I., Lapoux, V., Lindberg, S., Marqués, F. M., Masuoka, S., Mayer, J., Miki, K., Murakami, T., Najafi, M., Nakamura, T., Nakano, K., Nakatsuka, N., Nilsson, T., Obertelli, A., Ogata, K., de Oliveira Santos, F., Orr, N. A., Otsu, H., Otsuka, T., Ozaki, T., Panin, V., Papenbrock, T., Paschalis, S., Revel, A., Rossi, D., Saito, A. T., Saito, T. Y., Sasano, M., Sato, H., Satou, Y., Scheit, H., Schindler, F., Schrock, P., Shikata, M., Shimizu, N., Shimizu, Y., Simon, H., Sohler, D., Sorlin, O., Stuhl, L., Sun, Z. H., Takeuchi, S., Tanaka, M., Thoennessen, M., Törnqvist, H., Togano, Y., Tomai, T., Tscheuschner, J., Tsubota, J., Tsunoda, N., Uesaka, T., Utsuno, Y., Vernon, I., Wang, H., Yang, Z., Yasuda, M., Yoneda, K., and Yoshida, S.

Published
2023
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13. Near-optimal intense and powerful terahertz source by optical rectification in lithium niobate crystal

Author

Guiramand, L., Nkeck, J. E., Ropagnol, X., Ozaki, T., and Blanchard, F.

Subjects
Physics - Optics
Abstract

Using an affordable ytterbium laser with sub-mJ of energy combined with a novel pulse compression technique, we demonstrate an extremely competitive state-of-the-art terahertz (THz) source with 53 mW of average power and 310 kV/cm at focus from the tilted-pulse front pumping scheme in lithium niobate at room temperature. Key points of this demonstration include the use of a pump pulse duration of 280 fs in combination with an echelon mirror. Our results present unmatched combined characteristics and are highly competitive with the existing THz sources pumped at the mJ range. This demonstration is a step towards the democratization of access to intense and powerful THz pulses., Comment: 6 pages, 5 figures, 1 table

Published
2021

14. Quasi-free Neutron Knockout Reaction Reveals a Small $s$-orbital Component in the Borromean Nucleus $^{17}$B

Author

Yang, Z. H., Kubota, Y., Corsi, A., Yoshida, K., Sun, X. -X., Li, J. G., Kimura, M., Michel, N., Ogata, K., Yuan, C. X., Yuan, Q., Authelet, G., Baba, H., Caesar, C., Calvet, D., Delbart, A., Dozono, M., Feng, J., Flavigny, F., Gheller, J. -M., Gibelin, J., Giganon, A., Gillibert, A., Hasegawa, K., Isobe, T., Kanaya, Y., Kawakami, S., Kim, D., Kiyokawa, Y., Kobayashi, M., Kobayashi, N., Kobayashi, T., Kondo, Y., Korkulu, Z., Koyama, S., Lapoux, V., Maeda, Y., Marqes, F. M., Motobayashi, T., Miyazaki, T., Nakamura, T., Nakatsuka, N., Nishio, Y., Obertelli, A., Ohkura, y A., Orr, N. A., Ota, S., Otsu, H., Ozaki, T., Panin, V., Paschalis, S., Pollacco, E. C., Reichert, S., Rousse, J. -Y., Saito, A. T., Sakaguchi, S., Sako, M., Santamaria, C., Sasano, 4 M., Sato, H., Shikata, M., Shimizu, Y., Shindo, Y., Stuhl, L., Sumikama, T., Sun, Y. L., Tabata, M., Togano, Y., Tsubota, J., Xu, F. R., Yasuda, J., Yoneda, K., Zenihiro, J., Zhou, S. -G., Zuo, W., and Uesaka, T.

Subjects
Nuclear Experiment
Abstract

A kinematically complete quasi-free $(p,pn)$ experiment in inverse kinematics was performed to study the structure of the Borromean nucleus $^{17}$B, which had long been considered to have neutron halo. By analyzing the momentum distributions and exclusive cross sections, we obtained the spectroscopic factors for $1s_{1/2}$ and $0d_{5/2}$ orbitals, and a surprisingly small percentage of 9(2)$\%$ was determined for $1s_{1/2}$. Our finding of such a small $1s_{1/2}$ component and the halo features reported in prior experiments can be explained by the deformed relativistic Hartree-Bogoliubov theory in continuum, revealing a definite but not dominant neutron halo in $^{17}$B. The present work gives the smallest $s$- or $p$-orbital component among known nuclei exhibiting halo features, and implies that the dominant occupation of $s$ or $p$ orbitals is not a prerequisite for the occurrence of neutron halo., Comment: Accepted for publication in Physical Review Letters,8 pages, 4 figures

Published
2021
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15. Surface localization of the dineutron in $^{11}$Li

Author

Kubota, Y., Corsi, A., Authelet, G., Baba, H., Caesar, C., Calvet, D., Delbart, A., Dozono, M., Feng, J., Flavigny, F., Gheller, J. -M., Gibelin, J., Giganon, A., Gillibert, A., Hasegawa, K., Isobe, T., Kanaya, Y., Kawakami, S., Kim, D., Kikuchi, Y., Kiyokawa, Y., Kobayashi, M., Kobayashi, N., Kobayashi, T., Kondo, Y., Korkulu, Z., Koyama, S., Lapoux, V., Maeda, Y., Marqués, F. M., Motobayashi, T., Miyazaki, T., Nakamura, T., Nakatsuka, N., Nishio, Y., Obertelli, A., Ogata, K., Ohkura, A., Orr, N. A., Ota, S., Otsu, H., Ozaki, T., Panin, V., Paschalis, S., Pollacco, E. C., Reichert, S., Roussé, J. -Y., Saito, A. T., Sakaguchi, S., Sako, M., Santamaria, C., Sasano, M., Sato, H., Shikata, M., Shimizu, Y., Shindo, Y., Stuhl, L., Sumikama, T., Sun, Y. L., Tabata, M., Togano, Y., Tsubota, J., Yang, Z. H., Yasuda, J., Yoneda, K., Zenihiro, J., and Uesaka, T.

Subjects
Nuclear Experiment
Abstract

The formation of a dineutron in the nucleus $^{11}$Li is found to be localized to the surface region. The experiment measured the intrinsic momentum of the struck neutron in $^{11}$Li via the $(p,pn)$ knockout reaction at 246 MeV/nucleon. The correlation angle between the two neutrons is, for the first time, measured as a function of the intrinsic neutron momentum. A comparison with reaction calculations reveals the localization of the dineutron at $r\sim3.6$ fm. The results also support the density dependence of dineutron formation as deduced from Hartree-Fock-Bogoliubov calculations for nuclear matter., Comment: 19 pages, 4 figures. Accepted for Physical Review Letters

Published
2020
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16. Voltage-controlled magnetic anisotropy in antiferromagnetic MgO-capped MnPt films

Author

Chang, P. -H., Fang, W., Ozaki, T., and Belashchenko, K. D.

Subjects
Condensed Matter - Materials Science, Condensed Matter - Mesoscale and Nanoscale Physics
Abstract

The magnetic anisotropy in MgO-capped MnPt films and its voltage control are studied using first-principles calculations. Sharp variation of the magnetic anisotropy with film thickness, especially in the Pt-terminated film, suggests that it may be widely tuned by adjusting the film thickness. In thick films the linear voltage control coefficient is as large as 1.5 and $-0.6$ pJ/Vm for Pt-terminated and Mn-terminated interfaces, respectively. The combination of a widely tunable magnetic anisotropy energy and a large voltage-control coefficient suggest that MgO-capped MnPt films can serve as a versatile platform for magnetic memory and antiferromagnonic applications., Comment: 6 pages, 5 figures. This version includes significant revisions after peer review and corrects an error in the values of the VCMA coefficient, which in the original version were mistakenly given with respect to the E-field in vacuum (rather than MgO)

Published
2020
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17. Electronic structure of a 3x3-ordered silicon layer on Al(111)

Author

Sato, Y., Fukaya, Y., Cameau, M., Kundu, A. K., Shiga, D., Yukawa, R., Horiba, K., Chen, C. -H., Huang, A., Jeng, H. -T., Ozaki, T., Kumigashira, H., Niibe, M., and Matsuda, I.

Subjects
Condensed Matter - Materials Science
Abstract

Electronic structure of the 3x3 ordered-phase of a silicon (Si) layer on Al(111) has been studied by angle resolved photoemission spectroscopy (ARPES) technique using synchrotron radiation and modeled by a trial atomic model. A closed Fermi surface originating from linearly dispersing band is identified. A band structure calculation of a trial atomic model of the honeycomb silicene on Al(111) implies that the metallic band originates from the Al-Si hybrid state that has the Dirac cone-like dispersion curves. The Si layer on Al(111) can be a model system of Xene to realize the massless electronic system through the overlayer-substrate interaction., Comment: 6 pages, 6 figures

Published
2020
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18. Extending the Southern Shore of the Island of Inversion to $^{28}$F

Author

Revel, A., Sorlin, O., Marques, F. M., Kondo, Y., Kahlbow, J., Nakamura, T., Orr, N. A., Nowacki, F., Tostevin, J. A., Yuan, C. X., Achouri, N. L., Falou, H. Al, Atar, L., Aumann, T., Baba, H., Boretzky, K., Caesar, C., Calvet, D., Chae, H., Chiga, N., Corsi, A., Crawford, H. L., Delaunay, F., Delbart, A., Deshayes, Q., Dombradi, Z., Douma, C. A., Elekes, Z., Fallon, P., Gasparic, I., Gheller, J. -M., Gibelin, J., Gillibert, A., Harakeh, M. N., He, W., Hirayama, A., Hoffman, C. R., Holl, M., Horvat, A., Horvath, A., Hwang, J. W., Isobe, T., Kalantar-Nayestanaki, N., Kawase, S., Kim, S., Kisamori, K., Kobayashi, T., Korper, D., Koyama, S., Kuti, I., Lapoux, V., Lindberg, S., Masuoka, S., Mayer, J., Miki, K., Murakami, T., Najafi, M., Nakano, K., Nakatsuka, N., Nilsson, T., Obertelli, A., Santos, F. de Oliveira, Otsu, H., Ozaki, T., Panin, V., Paschalis, S., Rossi, D., Saito, A. T., Saito, T., Sasano, M., Sato, H., Satou, Y., Scheit, H., Schindler, F., Schrock, P., Shikata, M., Shimizu, Y., Simon, H., Sohler, D., Stuhl, L., Takeuchi, S., Tanaka, M., Thoennessen, M., Tornqvist, H., Togano, Y., Tomai, T., Tscheuschner, J., Tsubota, J., Uesaka, T., Yang, Z., Yasuda, M., and Yoneda, K.

Subjects
Nuclear Experiment
Abstract

Detailed spectroscopy of the neutron-unbound nucleus $^{28}$F has been performed for the first time following proton/neutron removal from $^{29}$Ne/$^{29}$F beams at energies around 230 MeV/nucleon. The invariant-mass spectra were reconstructed for both the $^{27}$F$^{(*)}+n$ and $^{26}$F$^{(*)}+2n$ coincidences and revealed a series of well-defined resonances. A near-threshold state was observed in both reactions and is identified as the $^{28}$F ground state, with $S_n(^{28}$F$)=-199(6)$ keV, while analysis of the $2n$ decay channel allowed a considerably improved $S_n(^{27}$F$)=1620(60)$ keV to be deduced. Comparison with shell-model predictions and eikonal-model reaction calculations have allowed spin-parity assignments to be proposed for some of the lower-lying levels of $^{28}$F. Importantly, in the case of the ground state, the reconstructed $^{27}$F$+n$ momentum distribution following neutron removal from $^{29}$F indicates that it arises mainly from the $1p_{3/2}$ neutron intruder configuration. This demonstrates that the island of inversion around $N=20$ includes $^{28}$F, and most probably $^{29}$F, and suggests that $^{28}$O is not doubly magic., Comment: 6 pages, 3 figures, Supplemental Material, accepted for publication in Physical Review Letters

Published
2020
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19. Implosion and heating experiments of fast ignition targets by Gekko-XII and LFEX lasers

Author

Shiraga H., Fujioka S., Nakai M., Watari T., Nakamura H., Arikawa Y., Hosoda H., Nagai T., Koga M., Kikuchi H., Ishii Y., Sogo T., Shigemori K., Nishimura H., Zhang Z., Tanabe M., Ohira S., Fujii Y., Namimoto T., Sakawa Y., Maegawa O., Ozaki T., Tanaka K.A., Habara H., Iwawaki T., Shimada K., Key M., Norreys P., Pasley J., Nagatomo H., Johzaki T., Sunahara A., Murakami M., Sakagami H., Taguchi T., Norimatsu T., Homma H., Fujimoto Y., Iwamoto A., Miyanaga N., Kawanaka J., Kanabe T., Jitsuno T., Nakata Y., Tsubakimoto K., Sueda K., Kodama R., Kondo K., Morio N., Matsuo S., Kawasaki T., Sawai K., Tsuji K., Murakami H., Sarukura N., Shimizu T., Mima K., and Azechi H.

Subjects
Physics, QC1-999
Abstract

The FIREX-1 project, the goal of which is to demonstrate fuel heating up to 5 keV by fast ignition scheme, has been carried out since 2003 including construction and tuning of LFEX laser and integrated experiments. Implosion and heating experiment of Fast Ignition targets have been performed since 2009 with Gekko-XII and LFEX lasers. A deuterated polystyrene shell target was imploded with the 0.53- μm Gekko-XII, and the 1.053- μm beam of the LFEX laser was injected through a gold cone attached to the shell to generate hot electrons to heat the imploded fuel plasma. Pulse contrast ratio of the LFEX beam was significantly improved. Also a variety of plasma diagnostic instruments were developed to be compatible with harsh environment of intense hard x-rays (γ rays) and electromagnetic pulses due to the intense LFEX beam on the target. Large background signals around the DD neutron signal in time-of-flight record of neutron detector were found to consist of neutrons via (γ,n) reactions and scattered gamma rays. Enhanced neutron yield was confirmed by carefully eliminating such backgrounds. Neutron enhancement up to 3.5 × 107 was observed. Heating efficiency was estimated to be 10–20% assuming a uniform temperature rise model.

Published
2013
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20. Absolute Kα line spectroscopy for cone-guided fast-ignition targets

Author

Nishimura H., Zhang Z., Namimoto T., Fujioka S., Koga M., Shiraga H., Ozaki T., Iwawaki T., Morioka T., Morita K., Habara H., Tanaka K.A., Nishikino M., Kawachi T., Sagisaka A., Orimo S., Pirozhkov A.S., Ogura K., Yogo A., Kiriyama H., Kondo K., Shimomura T., Kanazawa S., Okano Y., and Azechi H.

Subjects
Physics, QC1-999
Abstract

Absolute Kα line spectroscopy is proposed to study laser-plasma interactions taking place in cone-guided fast ignition targets. A transmission-type spectrometer was developed, and its absolute sensitivity was measured with laser-generated x-rays and radioisotopes, showing good agreement with theoretical predictions. The absolute yield of Au Kα line was mesured in the fast ignition experimental campaign perfomed at ILE, Osaka University. Assuming a single Maxwellian electron spectrum and one-way travel of hot electrons through the cone, energy transfer efficiency of incident LFEX laser to hot electrons was derived.

Published
2013
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21. Intense quasi-monochromatic resonant harmonic generation in the multiphoton ionization regime

Author

Singh, M, Fareed, MA, Strelkov, V, Grum-Grzhimailo, AN, Magunov, A, Laramee, A, Legare, F, and Ozaki, T

Subjects
Optical Physics, Electrical and Electronic Engineering, Communications Technologies
Abstract

Resonant high-order harmonics, which result in quasimonochromatic extreme ultraviolet light with coherent intensity enhancement involving autoionizing resonances, have been demonstrated from laser-ablated plumes in the tunnel-ionization regime. Here, we demonstrate resonant harmonics in the previously unexplored multiphoton-ionization regime. We demonstrate an intense resonant harmonic from gallium with an intensity enhancement ratio of 714 relative to the neighboring harmonics, achieved without the need for extreme ultraviolet filtering methods, thus preventing a typical photon flux loss of more than 70%. Three-dimensional time-dependent Schrödinger equation calculations reveal that this increase in the enhancement ratio is due to the lowelectron wave packet spreading in the multiphoton-ionization regime. These results reveal a method for increasing the intensity and monochromaticity of intense multimicrojoule femtosecond extreme ultraviolet light and will also facilitate understanding of the involvement of autoionizing resonances in generating resonant harmonics in the multiphoton-ionization regime.

Published
2021

22. Structure of 13Be probed via quasi-free scattering

Author

Corsi, A., Kubota, Y., Casal, J., Gomez-Ramos, M., Moro, A. M., Authelet, G., Baba, H., Caesar, C., Calvet, D., Delbart, A., Dozono, M., Feng, J., Flavigny, F., Gheller, J. -M., Gibelin, J., Giganon, A., Gillibert, A., Hasegawa, K., Isobe, T., Kanaya, Y., Kawakami, S., Kim, D., Kiyokawa, Y., Kobayashi, M., Kobayashi, N., Kobayashi, T., Kondo, Y., Korkulu, Z., Koyama, S., Lapoux, V., Maeda, Y., Marques, F. M., Motobayashi, T., Miyazaki, T., Nakamura, T., Nakatsuka, N., Nishio, Y., Obertelli, A., Ohkura, A., Orr, N. A., Ota, S., Otsu, H., Ozaki, T., Panin, V., Paschalis, S., Pollacco, E. C., Reichert, S., Rousse, J. -Y., Saito, A. T., Sakaguchi, S., Sako, M., Santamaria, C., Sasano, M., Sato, H., Shikata, M., Shimizu, Y., Shindo, Y., Stuhl, L., Sumikama, T., Sun, Y. L., Tabata, M., Togano, Y., Tsubota, J., Uesaka, T., Yang, Z. H., Yasuda, J., Yoneda, K., and Zenihiro, J.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

We present an investigation of the structure of 13Be obtained via a kinematically complete measurement of the (p; pn) reaction in inverse kinematics at 265 MeV/nucleon. The relative energy spectrum of 13Be is compared to Transfer-to-the-Continuum calculations which use as structure inputs the overlaps of the 14Be ground-state wave function, computed in a three-body model, with the unbound states of the 13Be residual nucleus. The key role of neutron p-wave orbital in the interpretation of the low-relative-energy part of the spectrum is discussed.

Published
2019
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23. Hard particle spectra of galactic X-ray sources by relativistic magnetic reconnection in laser lab

Author

Law, K. F. F., Abe, Y., Morace, A., Arikawa, Y., Sakata, S., Lee, S., Matsuo, K., Morita, H., Ochiai, Y., Liu, C., Yogo, A., Okamoto, K., Golovin, D., Ehret, M., Ozaki, T., Nakai, M., Sentoku, Y., Santos, J. J., d'Humières, E., Korneev, Ph., and Fujioka, S.

Subjects
Physics - Plasma Physics, Astrophysics - High Energy Astrophysical Phenomena
Abstract

Magnetic reconnection is a process whereby magnetic field lines in different directions "reconnect" with each other, resulting in the rearrangement of magnetic field topology together with the conversion of magnetic field energy into the kinetic energy (K.E.) of energetic particles. This process occurs in magnetized astronomical plasmas, such as those in the solar corona, Earth's magnetosphere, and active galactic nuclei, and accounts for various phenomena, such as solar flares, energetic particle acceleration, and powering of photon emission. In the present study, we report the experimental demonstration of magnetic reconnection under relativistic electron magnetization situation, along with the observation of power-law distributed outflow in both electron and proton energy spectra. Through irradiation of an intense laser on a "micro-coil", relativistically magnetized plasma was produced and magnetic reconnection was performed with maximum magnetic field 3 kT. In the downstream outflow direction, the non-thermal component is observed in the high-energy part of both electron and proton spectra, with a significantly harder power-law slope of the electron spectrum (p = 1.535 +/- 0.015) that is similar to the electron injection model proposed to explain a hard emission tail of Cygnus X-1, a galactic X-ray source with the same order of magnetization. The obtained result showed experimentally that the magnetization condition in the emitting region of a galactic X-ray source is sufficient to build a hard electron population through magnetic reconnection., Comment: 25 pages, 10 figures

Published
2019
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24. Extending the Southern Shore of the Island of Inversion to F28

Author

Revel, A, Sorlin, O, Marqués, FM, Kondo, Y, Kahlbow, J, Nakamura, T, Orr, NA, Nowacki, F, Tostevin, JA, Yuan, CX, Achouri, NL, Al Falou, H, Atar, L, Aumann, T, Baba, H, Boretzky, K, Caesar, C, Calvet, D, Chae, H, Chiga, N, Corsi, A, Crawford, HL, Delaunay, F, Delbart, A, Deshayes, Q, Dombrádi, Z, Douma, CA, Elekes, Z, Fallon, P, Gašparić, I, Gheller, J-M, Gibelin, J, Gillibert, A, Harakeh, MN, He, W, Hirayama, A, Hoffman, CR, Holl, M, Horvat, A, Horváth, Á, Hwang, JW, Isobe, T, Kalantar-Nayestanaki, N, Kawase, S, Kim, S, Kisamori, K, Kobayashi, T, Körper, D, Koyama, S, Kuti, I, Lapoux, V, Lindberg, S, Masuoka, S, Mayer, J, Miki, K, Murakami, T, Najafi, M, Nakano, K, Nakatsuka, N, Nilsson, T, Obertelli, A, de Oliveira Santos, F, Otsu, H, Ozaki, T, Panin, V, Paschalis, S, Rossi, D, Saito, AT, Saito, T, Sasano, M, Sato, H, Satou, Y, Scheit, H, Schindler, F, Schrock, P, Shikata, M, Shimizu, Y, Simon, H, Sohler, D, Stuhl, L, Takeuchi, S, Tanaka, M, Thoennessen, M, Törnqvist, H, Togano, Y, Tomai, T, Tscheuschner, J, Tsubota, J, Uesaka, T, Yang, Z, Yasuda, M, and Yoneda, K

Subjects
Nuclear and Plasma Physics, Synchrotrons and Accelerators, Physical Sciences, SAMURAI21 collaboration, Mathematical Sciences, Engineering, General Physics, Mathematical sciences, Physical sciences
Abstract

Detailed spectroscopy of the neutron-unbound nucleus ^{28}F has been performed for the first time following proton/neutron removal from ^{29}Ne/^{29}F beams at energies around 230  MeV/nucleon. The invariant-mass spectra were reconstructed for both the ^{27}F^{(*)}+n and ^{26}F^{(*)}+2n coincidences and revealed a series of well-defined resonances. A near-threshold state was observed in both reactions and is identified as the ^{28}F ground state, with S_{n}(^{28}F)=-199(6)  keV, while analysis of the 2n decay channel allowed a considerably improved S_{n}(^{27}F)=1620(60)  keV to be deduced. Comparison with shell-model predictions and eikonal-model reaction calculations have allowed spin-parity assignments to be proposed for some of the lower-lying levels of ^{28}F. Importantly, in the case of the ground state, the reconstructed ^{27}F+n momentum distribution following neutron removal from ^{29}F indicates that it arises mainly from the 1p_{3/2} neutron intruder configuration. This demonstrates that the island of inversion around N=20 includes ^{28}F, and most probably ^{29}F, and suggests that ^{28}O is not doubly magic.

Published
2020

25. Extending the Southern Shore of the Island of Inversion to ^{28}F.

Author

Revel, A, Sorlin, O, Marqués, FM, Kondo, Y, Kahlbow, J, Nakamura, T, Orr, NA, Nowacki, F, Tostevin, JA, Yuan, CX, Achouri, NL, Al Falou, H, Atar, L, Aumann, T, Baba, H, Boretzky, K, Caesar, C, Calvet, D, Chae, H, Chiga, N, Corsi, A, Crawford, HL, Delaunay, F, Delbart, A, Deshayes, Q, Dombrádi, Z, Douma, CA, Elekes, Z, Fallon, P, Gašparić, I, Gheller, J-M, Gibelin, J, Gillibert, A, Harakeh, MN, He, W, Hirayama, A, Hoffman, CR, Holl, M, Horvat, A, Horváth, Á, Hwang, JW, Isobe, T, Kalantar-Nayestanaki, N, Kawase, S, Kim, S, Kisamori, K, Kobayashi, T, Körper, D, Koyama, S, Kuti, I, Lapoux, V, Lindberg, S, Masuoka, S, Mayer, J, Miki, K, Murakami, T, Najafi, M, Nakano, K, Nakatsuka, N, Nilsson, T, Obertelli, A, de Oliveira Santos, F, Otsu, H, Ozaki, T, Panin, V, Paschalis, S, Rossi, D, Saito, AT, Saito, T, Sasano, M, Sato, H, Satou, Y, Scheit, H, Schindler, F, Schrock, P, Shikata, M, Shimizu, Y, Simon, H, Sohler, D, Stuhl, L, Takeuchi, S, Tanaka, M, Thoennessen, M, Törnqvist, H, Togano, Y, Tomai, T, Tscheuschner, J, Tsubota, J, Uesaka, T, Yang, Z, Yasuda, M, Yoneda, K, and SAMURAI21 collaboration

Subjects
SAMURAI21 collaboration, General Physics, Mathematical Sciences, Physical Sciences, Engineering
Abstract

Detailed spectroscopy of the neutron-unbound nucleus ^{28}F has been performed for the first time following proton/neutron removal from ^{29}Ne/^{29}F beams at energies around 230  MeV/nucleon. The invariant-mass spectra were reconstructed for both the ^{27}F^{(*)}+n and ^{26}F^{(*)}+2n coincidences and revealed a series of well-defined resonances. A near-threshold state was observed in both reactions and is identified as the ^{28}F ground state, with S_{n}(^{28}F)=-199(6)  keV, while analysis of the 2n decay channel allowed a considerably improved S_{n}(^{27}F)=1620(60)  keV to be deduced. Comparison with shell-model predictions and eikonal-model reaction calculations have allowed spin-parity assignments to be proposed for some of the lower-lying levels of ^{28}F. Importantly, in the case of the ground state, the reconstructed ^{27}F+n momentum distribution following neutron removal from ^{29}F indicates that it arises mainly from the 1p_{3/2} neutron intruder configuration. This demonstrates that the island of inversion around N=20 includes ^{28}F, and most probably ^{29}F, and suggests that ^{28}O is not doubly magic.

Published
2020

26. Intense vortex high-order harmonics generated from laser-ablated plume

Author

Singh, M, Fareed, MA, Laramée, A, Isgandarov, E, and Ozaki, T

Subjects
Physical Sciences, Engineering, Technology, Applied Physics
Abstract

In this study, we demonstrate intense extreme-ultraviolet optical vortices generated using laser-ablation plume as the nonlinear medium. We used two types of plumes that are known to generate intense high-order harmonics for driving lasers with Gaussian beam profiles, but through different mechanisms, namely, carbon (diatomic carbon molecules) and tin (resonance with the autoionizing state). We find that the harmonic fluxes for diatomic carbon molecules are similar for Gaussian and vortex driving fields. However, for harmonics from the autoionizing state of tin (∼26.3 eV), the enhancement factor of the resonant harmonic intensity decreases by ∼50% when using the vortex driving field. The intense extreme-ultraviolet optical vortices demonstrated in this study will be useful for many applications including a material characterization technique known as optical angular momentum dichroism as well as the spectroscopy of spin-forbidden electronic transitions.

Published
2019

27. Publisher Correction: First observation of 28O

Author

Kondo, Y., Achouri, N. L., Falou, H. Al, Atar, L., Aumann, T., Baba, H., Boretzky, K., Caesar, C., Calvet, D., Chae, H., Chiga, N., Corsi, A., Delaunay, F., Delbart, A., Deshayes, Q., Dombrádi, Zs., Douma, C. A., Ekström, A., Elekes, Z., Forssén, C., Gašparić, I., Gheller, J.-M., Gibelin, J., Gillibert, A., Hagen, G., Harakeh, M. N., Hirayama, A., Hoffman, C. R., Holl, M., Horvat, A., Horváth, Á., Hwang, J. W., Isobe, T., Jiang, W. G., Kahlbow, J., Kalantar-Nayestanaki, N., Kawase, S., Kim, S., Kisamori, K., Kobayashi, T., Körper, D., Koyama, S., Kuti, I., Lapoux, V., Lindberg, S., Marqués, F. M., Masuoka, S., Mayer, J., Miki, K., Murakami, T., Najafi, M., Nakamura, T., Nakano, K., Nakatsuka, N., Nilsson, T., Obertelli, A., Ogata, K., de Oliveira Santos, F., Orr, N. A., Otsu, H., Otsuka, T., Ozaki, T., Panin, V., Papenbrock, T., Paschalis, S., Revel, A., Rossi, D., Saito, A. T., Saito, T. Y., Sasano, M., Sato, H., Satou, Y., Scheit, H., Schindler, F., Schrock, P., Shikata, M., Shimizu, N., Shimizu, Y., Simon, H., Sohler, D., Sorlin, O., Stuhl, L., Sun, Z. H., Takeuchi, S., Tanaka, M., Thoennessen, M., Törnqvist, H., Togano, Y., Tomai, T., Tscheuschner, J., Tsubota, J., Tsunoda, N., Uesaka, T., Utsuno, Y., Vernon, I., Wang, H., Yang, Z., Yasuda, M., Yoneda, K., and Yoshida, S.

Published
2023
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28. Parametrization of LSDA+$U$ for noncollinear magnetic configurations: Multipolar magnetism in UO$_2$

Author

Dudarev, S. L., Liu, P., Andersson, D. A., Stanek, C. R., Ozaki, T., and Franchini, C.

Subjects
Condensed Matter - Strongly Correlated Electrons
Abstract

To explore the formation of noncollinear magnetic configurations in materials with strongly correlated electrons, we derive a noncollinear LSDA+$U$ model involving only one parameter $U$, as opposed to the difference between the Hubbard and Stoner parameters $U-J$. Computing $U$ in the constrained random phase approximation, we investigate noncollinear magnetism of uranium dioxide UO$_2$ and find that the spin-orbit coupling (SOC) stabilizes the 3$\textbf{k}$ ordered magnetic ground state. The estimated SOC strength in UO$_2$ is as large as 0.73 eV per uranium atom, making spin and orbital degrees of freedom virtually inseparable. Using a multipolar pseudospin Hamiltonian, we show how octupolar and dipole-dipole exchange coupling help establish the 3$\textbf{k}$ magnetic ground state with canted ordering of uranium $f$-orbitals. The cooperative Jahn-Teller effect does not appear to play a significant part in stabilizing the noncollinear 3$\textbf{k}$ state, which has the lowest energy even in an undistorted lattice. The choice of parameter $U$ in the LSDA+$U$ model has a notable quantitative effect on the predicted properties of UO$_2$, in particular on the magnetic exchange interaction and, perhaps trivially, on the band gap: The value of $U=3.46$ eV computed fully $ab$ $initio$ delivers the band gap of 2.11~eV in good agreement with experiment, and a balanced account of other pertinent energy scales., Comment: 14 pages, 9 figures

Published
2018
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29. Role of Helium-Hydrogen ratio on energetic interchange mode behaviour and its effect on ion temperature and micro-turbulence in LHD

Author

Michael, C. A., Tanaka, K., Akiyama, T., Ozaki, T., Osakabe, M., Sakakibara, S., Yamaguchi, H., Murakami, S., Yokoyama, M., Shoji, M., Vyacheslavov, L. N., and group, LHD experimental

Subjects
Physics - Plasma Physics
Abstract

In the Large helical device, a change of energetic particle mode is observed as He concentration is varied in ion-ITB type experiments, having constant electron density and input heating power but with a clear increase of central ion temperature in He rich discharges. This activity consists of bursty, but damped energetic interchange modes (EICs, X Du et al., Phys. Rev. Lett. 114 p.155003 (2015)), whose occurrence rate is dramatically lower in the He-rich discharges. Mechanisms are discussed for the changes in drive and damping of the modes with He concentration. These EIC bursts consist of marked changes in the radial electric field, which is derived from the phase velocity of turbulence measured with the 2D phase contrast imaging (PCI) system. Similar bursts are detected in edge fast ion diagnostics. Ion thermal transport by gyro-Bohm scaling is recognised as a contribution to the change in ion temperature, though fast ion losses by these EIC modes may also contribute to the ion temperature dependence on He concentration, most particularly controlling the height of an "edge-pedestal" in the $T_{i}$ profile. The steady-state level of fast ions is shown to be larger in Helium rich discharges on the basis of a compact neutral particle analyser (CNPA), and the fast-ion component of the diamagnetic stored energy. These events also have an influence on turbulence and transport. The large velocity shear induced produced during these events transiently improves confinement and suppresses turbulence, and has a larger net effect when bursts are more frequent in Hydrogen discharges. This exactly offsets the increased gyro-Bohm related turbulence drive in Hydrogen which results in the same time-averaged turbulence level in Hydrogen as in Helium.

Published
2017
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30. Giant self-induced transparency of intense few-cycle terahertz pulses in n-doped silicon

Author

Chefonov, O. V., Ovchinnikov, A. V., Romashevskiy, S. A., Chai, X., Ozaki, T., Savel'ev, A. B., Agranat, M. B., and Fortov, V. E.

Subjects
Physics - Optics
Abstract

The results of high-field terahertz transmission experiments on n-doped silicon (carrier concentration of $8.7\times10^{16}$ cm$^{-3}$) are presented. We use terahertz pulses with electric field strengths up to 3.1 MV cm$^{-1}$ and a pulse duration of 700 fs. Huge transmittance enhancement of $\sim$90 times is observed with increasing of the terahertz electric field strengths within the range of 1.5--3.1 MV cm$^{-1}$.

Published
2017
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31. Harmonic Generation from Neutral Manganese Atoms in the Vicinity of the Giant Autoionization Resonance.

Author

Fareed, MA, Strelkov, VV, Singh, M, Thiré, N, Mondal, S, Schmidt, BE, Légaré, F, and Ozaki, T

Subjects
Physical Sciences, General Physics
Abstract

High harmonics from laser-ablated plumes are mostly generated from ionic species. We demonstrate that with ultrashort infrared (∼1.82  μm) driving lasers, high harmonics from laser-ablated manganese are predominantly generated from neutral atoms, a transition metal atom with an ionization potential of 7.4 eV. Our results open the possibility to advance laser-ablation technique to study the dynamics of neutral atoms of low ionization potential. Moreover, as manganese contains giant autoionizing resonance, intense and broadband high harmonics have been demonstrated from this resonance at energies from 49 to 53 eV. This opens the possibility to generate intense attosecond pulses directly from the giant resonances, as well as to study these resonances using high-harmonic spectroscopy.

Published
2018

32. Structure of Beryllium Isotopes Beyond the Neutron Dripline

Author

Monteagudo, B., Gibelin, J., Marqués, F. M., Corsi, A., Kubota, Y., Orr, N. A., Authelet, G., Baba, H., Caesar, C., Calvet, D., Delbart, A., Dozono, M., Feng, J., Flavigny, F., Gheller, J. M., Giganon, A., Gillibert, A., Hasegawa, K., Isobe, T., Kanaya, Y., Kawakami, S., Kim, D., Kiyokawa, Y., Kobayashi, M., Kobayashi, N., Kobayashi, T., Kondo, Y., Korkulu, Z., Koyama, S., Lapoux, V., Maeda, Y., Motobayashi, T., Miyazaki, T., Nakamura, T., Nakatsuka, N., Nishio, Y., Obertelli, A., Ohkura, A., Ota, S., Otsu, H., Ozaki, T., Panin, V., Paschalis, S., Pollacco, E. C., Reichert, S., Rousse, J. Y., Saito, A. T., Sakaguchi, S., Sako, M., Santamaria, C., Sasano, M., Sato, H., Shikata, M., Shimizu, Y., Shindo, Y., Stuhl, L., Sumikama, T., Tabata, M., Togano, Y., Tsubota, J., Uesaka, T., Yang, Z. H., Yasuda, J., Yoneda, K., Zenihiro, J., Orr, N. A., editor, Ploszajczak, M., editor, Marqués, F. M., editor, and Carbonell, J., editor

Published
2020
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33. Aligned copper nanorod arrays for highly efficient generation of intense ultra-broadband THz pulses

Author

Mondal, S., Wei, Q., Ding, W. J., Hafez, H. A., Fareed, M. A., Laramée, A., Ropagnol, X., Zhang, G., Sun, S., Sheng, Z. M., Zhang, J., and Ozaki, T.

Subjects
Physics - Plasma Physics
Abstract

We demonstrate an intense broadband terahertz (THz) source based on the interaction of relativistic-intensity femtosecond lasers with aligned copper nanorod array targets. For copper nanorod targets with length 5 \mu m, a maximum 13.8 times enhancement in the THz pulse energy (in $\leq$ 20 THz spectral range) is measured as compared to that with a thick plane copper target under the same laser conditions. A further increase in the nanorod length leads to a decrease in the THz pulse energy at medium frequencies ($\leq$ 20THz) and increase of the electromagnetic pulse energy in the high-frequency range (from 20 - 200 THz). For the latter, we measure a maximum energy enhancement of 28 times for the nanorod targets of length 60 \mu m . Particle-in-cell simulations reveal that THz pulses are mostly generated by coherent transition radiation of laser produced hot electrons, which are efficiently enhanced with the use of nanorod targets. Good agreement is found between the simulation and experimental results., Comment: 14 pages, 5 figure

Published
2016

34. High-order harmonic generation from the dressed autoionizing states.

Author

Fareed, MA, Strelkov, VV, Thiré, N, Mondal, S, Schmidt, BE, Légaré, F, and Ozaki, T

Subjects
MD Multidisciplinary
Abstract

In high-order harmonic generation, resonant harmonics (RH) are sources of intense, coherent extreme-ultraviolet radiation. However, intensity enhancement of RH only occurs for a single harmonic order, making it challenging to generate short attosecond pulses. Moreover, the mechanism involved behind such RH was circumstantial, because of the lack of direct experimental proofs. Here, we demonstrate the exact quantum paths that electron follows for RH generation using tin, showing that it involves not only the autoionizing state, but also a harmonic generation from dressed-AIS that appears as two coherent satellite harmonics at frequencies ±2Ω from the RH (Ω represents laser frequency). Our observations of harmonic emission from dressed states open the possibilities of generating intense and broadband attosecond pulses, thus contributing to future applications in attosecond science, as well as the perspective of studying the femtosecond and attosecond dynamics of autoionizing states.

Published
2017

35. Aligned copper nanorod arrays for highly efficient generation of intense ultra-broadband THz pulses.

Author

Mondal, S, Wei, Q, Ding, WJ, Hafez, HA, Fareed, MA, Laramée, A, Ropagnol, X, Zhang, G, Sun, S, Sheng, ZM, Zhang, J, and Ozaki, T

Subjects
physics.plasm-ph, Biochemistry and Cell Biology, Other Physical Sciences
Abstract

We demonstrate an intense broadband terahertz (THz) source based on the interaction of relativistic-intensity femtosecond lasers with aligned copper nanorod array targets. For copper nanorod targets with a length of 5 μm, a maximum 13.8 times enhancement in the THz pulse energy (in ≤20 THz spectral range) is measured as compared to that with a thick plane copper target under the same laser conditions. A further increase in the nanorod length leads to a decrease in the THz pulse energy at medium frequencies (≤20 THz) and increase of the electromagnetic pulse energy in the high-frequency range (from 20-200 THz). For the latter, we measure a maximum energy enhancement of 28 times for the nanorod targets with a length of 60 μm. Particle-in-cell simulations reveal that THz pulses are mostly generated by coherent transition radiation of laser produced hot electrons, which are efficiently enhanced with the use of nanorod targets. Good agreement is found between the simulation and experimental results.

Published
2017

37. Substitution of Ni for Fe in superconducting Fe$_{0.98}$Te$_{0.5}$Se$_{0.5}$ depresses the normal-state conductivity but not the magnetic spectral weight

Author

Wang, Jinghui, Zhong, Ruidan, Li, Shichao, Gan, Yuan, Xu, Zhijun, Zhang, Cheng, Ozaki, T., Matsuda, M., Zhao, Yang, Li, Qiang, Xu, Guangyong, Gu, Genda, Tranquada, J. M., Birgeneau, R. J., and Wen, Jinsheng

Subjects
Condensed Matter - Superconductivity, Condensed Matter - Materials Science, Condensed Matter - Strongly Correlated Electrons
Abstract

We have performed systematic resistivity and inelastic neutron scattering measurements on Fe$_{0.98-z}$Ni$_z$Te$_{0.5}$Se$_{0.5}$ samples to study the impact of Ni substitution on the transport properties and the low-energy ($\le$ 12 meV) magnetic excitations. It is found that, with increasing Ni doping, both the conductivity and superconductivity are gradually suppressed; in contrast, the low-energy magnetic spectral weight changes little. Comparing with the impact of Co and Cu substitution, we find that the effects on conductivity and superconductivity for the same degree of substitution grow systematically as the atomic number of the substituent deviates from that of Fe. The impact of the substituents as scattering centers appears to be greater than any contribution to carrier concentration. The fact that low-energy magnetic spectral weight is not reduced by increased electron scattering indicates that the existence of antiferromagnetic correlations does not depend on electronic states close to the Fermi energy., Comment: 6 pages, 5 figures

Published
2015
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38. Terahertz emission enhancement of GaAs-based photoconductive antennas via the nanodecoration of their surface by means of pulsed-laser-deposition of gold nanoparticles.

Author

Isgandarov, E., Pichon, L., Ropagnol, X., El Khakani, M. A., and Ozaki, T.

Subjects
GOLD nanoparticles, ANTENNAS (Electronics), PULSED laser deposition, FIELD emission, LASER pulses, SURFACE plasmons, SURFACE plasmon resonance
Abstract

We report a systematic study of free-space terahertz (THz) emission from photoconductive antennas (PCAs) nanodecorated with gold nanoparticles (Au-NPs) deposited by using the pulsed laser deposition (PLD) technique. H-shaped dipole micro-structured PCAs fabricated on semi-insulating GaAs substrates were decorated under various PLD conditions. Thus, by increasing the number of laser ablation pulses (NLP) of the Au target, both the average size of Au-NPs and the surface loading of PCAs increase. Compared with non-decorated PCAs, those decorated with Au-NPs exhibit significant enhancement in the radiated THz pulse amplitude. A maximum enhancement of ∼2.3 was achieved at NLP = 1250. Under this optimal NLP condition, not only is the average Au-NP size (of ∼15 nm) favorable for light absorption via localized surface plasmons, but also the inter-distance between NPs, the light reflectance, and facilitated transport of photocarriers, all combine to yield a stronger THz field emission. For higher NLP (≥2000), NPs coalesce and tend to form continuous film NPs, which not only significantly limits the light scattering toward the GaAs underlying substrate, but also electrically shorts the PCA. Finally, the Au-NP decoration of GaAs PCAs was also found to improve their overall thermal conductivity, making them much more thermally stable than their non-decorated counterparts. [ABSTRACT FROM AUTHOR]

Published
2023
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46. Efficient generation of sub-100 eV high-order harmonics from carbon molecules using infrared laser pulses

Author

Fareed, MA, Thiré, N, Mondal, S, Schmidt, BE, Légaré, F, and Ozaki, T

Subjects
Applied Physics, Engineering, Physical Sciences
Abstract

© 2016 AIP Publishing LLC. We demonstrate broad bandwidth and intense sub-100 eV high-order harmonics from diatomic carbon molecules driven by long-wavelength laser pulses. Up to now, one limitation of the intense carbon harmonic source driven by a 0.8 μm wavelength Ti:sapphire laser has been the low cutoff around ∼32 eV. In this paper, we show that this harmonic cutoff is extended to ∼70 eV by increasing the driving laser wavelength to 1.71 μm. Surprisingly, the carbon harmonic intensity is found to be high despite the long wavelength driving laser. Experiments show only ∼30% decrease in the harmonic intensity when changing the driving laser wavelength from 0.8 μm to 1.71 μm. Such intense sub-100 eV coherent X-rays would have important applications in various domains of science and technology.

Published
2016

47. Carbon molecules for intense high-order harmonics from laser-ablated graphite plume

Author

Fareed, MA, Mondal, S, Pertot, Y, and Ozaki, T

Subjects
laser ablation, visible spectra, spectra induced by strong-field or attosecond laser irradiation, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Optical Physics, Theoretical and Computational Chemistry, General Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract

© 2016 IOP Publishing Ltd. We present the simultaneous study of laser-induced plasma emission spectroscopy and high-order harmonic generation (HHG) from laser-ablated graphite plume. Time resolved evolution of carbon species in the ablation plume is investigated, revealing a clear abundance of C2 molecules under conditions optimal for graphite HHG. We also compare the high-order harmonic spectra with the photoionization cross-section of C2 molecules, which shows good agreement between the two. Our observations provide strong evidence that C2 molecules contribute to intense graphite HHG. Furthermore, properties of C2 molecules are investigated at different time periods of plasma evolution, and we identify the laser-ablation conditions for optimum harmonics yield.

Published
2016

48. Terahertz emission from two-plasmon-decay induced transient currents in laser-solid interactions

Author

Liao, G-Q, Li, Y-T, Li, C, Mondal, S, Hafez, HA, Fareed, MA, Ozaki, T, Wang, W-M, Sheng, Z-M, and Zhang, J

Subjects
Atomic, Molecular, Nuclear, Particle and Plasma Physics, Astronomical and Space Sciences, Classical Physics, Fluids & Plasmas, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract

© 2016 AIP Publishing LLC. We have studied the generation of terahertz (THz) radiation via the interaction of intense femtosecond laser pulses with solid targets at a small incidence angle. It is found that preplasma with a moderate density gradient can enhance the emission. We also observe saturation of the THz output with the driving laser energy. We find that THz emission is closely related to the 3/2 harmonics of the driving laser. Particle-in-cell simulations indicate that under the present experimental conditions, the THz emission could be attributed to the transient currents at the plasma-vacuum interface, mainly formed by the two-plasmon-decay instability.

Published
2016

49. Substitution of Ni for Fe in superconducting Fe0.98Te0.5Se0.5 depresses the normal-state conductivity but not the magnetic spectral weight

Author

Wang, J, Zhong, R, Li, S, Gan, Y, Xu, Z, Zhang, C, Ozaki, T, Matsuda, M, Zhao, Y, Li, Q, Xu, G, Gu, G, Tranquada, JM, Birgeneau, RJ, and Wen, J

Subjects
cond-mat.supr-con, cond-mat.mtrl-sci, cond-mat.str-el, Fluids & Plasmas, Physical Sciences, Chemical Sciences, Engineering
Abstract

We have performed systematic resistivity and inelastic neutron scattering measurements on Fe0.98-zNizTe0.5Se0.5 samples to study the impact of Ni substitution on the transport properties and the low-energy (≤12meV) magnetic excitations. It is found that, with increasing Ni doping, both the conductivity and superconductivity are gradually suppressed; in contrast, the low-energy magnetic spectral weight changes little. Comparing with the impact of Co and Cu substitution, we find that the effects on conductivity and superconductivity for the same degree of substitution grow systematically as the atomic number of the substituent deviates from that of Fe. The impact of the substituents as scattering centers appears to be greater than any contribution to carrier concentration. The fact that low-energy magnetic spectral weight is not reduced by increased electron scattering indicates that the existence of antiferromagnetic correlations does not depend on electronic states close to the Fermi energy.

Published
2015

50. Evolution of the two-neutron configuration from 11Li to 13Li

Author

André, P., Corsi, A., Revel, A., Kubota, Y., Casal, J., Fossez, K., Gómez-Camacho, J., Authelet, G., Baba, H., Caesar, C., Calvet, D., Delbart, A., Dozono, M., Feng, J., Flavigny, F., Gheller, J.-M., Gibelin, J., Giganon, A., Gillibert, A., Hasegawa, K., Isobe, T., Kanaya, Y., Kawakami, S., Kim, D., Kiyokawa, Y., Kobayashi, M., Kobayashi, N., Kobayashi, T., Kondo, Y., Korkulu, Z., Koyama, S., Lapoux, V., Maeda, Y., Marqués, F.M., Motobayashi, T., Miyazaki, T., Nakamura, T., Nakatsuka, N., Nishio, Y., Obertelli, A., Ohkura, A., Orr, N.A., Ota, S., Otsu, H., Ozaki, T., Panin, V., Paschalis, S., Pollacco, E.C., Reichert, S., Rousse, J.-Y., Saito, A.T., Sakaguchi, S., Sako, M., Santamaria, C., Sasano, M., Sato, H., Shikata, M., Shimizu, Y., Shindo, Y., Stuhl, L., Sumikama, T., Sun, Y.L., Tabata, M., Togano, Y., Tsubota, J., Uesaka, T., Yang, Z.H., Yasuda, J., Yoneda, K., and Zenihiro, J.

Published
2024
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