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Search Results: Records 1-8 displayed on this page of 8

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Journal Articles

Clades of huge phages from across Earth's ecosystems

Al-Shayeb, B.*; Sachdeva, R.*; Chen, L.-X.*; Ward, F.*; Munk, P.*; Devoto, A.*; Castelle, C. J.*; Olm, M. R.*; Bouma-Gregson, K.*; Amano, Yuki; et al.

Nature, 578(7795), p.425 - 431, 2020/02

https://doi.org/10.1038/s41586-020-2007-4

Times Cited Count：220 Percentile：99.5(Multidisciplinary Sciences)

Journal Articles

High-j proton alignments in $^{101}$ Pd

Zhou, H. B.*; Zhou, X. H.*; Zhang, Y. H.*; Zheng, Y.*; Liu, M. L.*; Zhang, N. T.*; Chen, L.*; Wang, S. T.*; Li, G. S.*; Wang, H. X.*; et al.

European Physical Journal A, 47(9), p.107_1 - 107_7, 2011/09

https://doi.org/10.1140/epja/i2011-11107-3

Times Cited Count：4 Percentile：32.8(Physics, Nuclear)

High-spin states in $^{101}$ Pd have been investigated by means of in-beam -ray spectroscopic techniques. The previously known $_{5/2}$ and 1/2[550] bands were extended to higher spins. The band crossings observed experimentally are explained by the alignment of $_{9/2}$ protons. The band properties in $^{101}$ Pd are compared with those in the neighboring nuclei and are discussed within the framework of the cranked shell model.

Journal Articles

Signature inversion in the 7/2[503] band of $^{185}$ Pt

Li, G. S.*; Zhou, X. H.*; Zhang, Y. H.*; Zheng, Y.*; Liu, M. L.*; Hua, W.*; Zhou, H. B.*; Ding, B.*; Wang, H. X.*; Lei, X. G.*; et al.

Journal of Physics G; Nuclear and Particle Physics, 38(9), p.095105_1 - 095105_9, 2011/09

https://doi.org/10.1088/0954-3899/38/9/095105

Times Cited Count：1 Percentile：11.77(Physics, Nuclear)

High-spin states in $^{185}$ Pt have been investigated by means of in beam -ray spectroscopic method at the JAEA tandem facility. Low-spin signature inversion is revealed in the 7/2[503] band. The inversion can be interpreted as a configuration change from the 7/2[503] orbital to the 7/2[514] orbital with increasing spin, which is supported by a theoretical calculation of the semi-classical Donau and Frauendorf approach.

Journal Articles

Band properties of the transitional nucleus $^{187}$ Pt

Zhou, X. H.*; Xing, Y. B.*; Liu, M. L.*; Zhang, Y. H.*; Guo, Y. X.*; Ma, L.*; Lei, X. G.*; Guo, W. T.*; Oshima, Masumi; Toh, Yosuke; et al.

Physical Review C, 75(3), p.034314_1 - 034314_17, 2007/03

https://doi.org/10.1103/PhysRevC.75.034314

Times Cited Count：18 Percentile：73.87(Physics, Nuclear)

High-spin states in $^{187}$ Pt has been studied experimentally by in-beam -ray spectroscopy. The previously known bands based on the $nu i_{13/2}, nu 7/2^{-}[503]$ and $nu i^{2}_{13/2} nu j$ configurations have been extended to high-spin states, and new rotational bands associated with the $nu 3/2^{-}[512]$ and $nu 1/2^{-}[521]$ Nilsson orbits have been identified. The total Routhian surface calculations indicate that the transitional nucleus $^{187}$ Pt is very soft with respect to and deformations. The band properties have been compared with the systematics observed in neiboring nuclei and have been interpreted within the framework of the cranked shell model.

Journal Articles

Search for signature inversion in the $pi i_{13/2} bigotimes nu i_{13/2}$ bands in $^{182,184,186}$ Au

Zhang, Y. H.*; Zhou, X. H.*; He, J. J.*; Liu, Z.*; Fang, Y. D.*; Guo, W. T.*; Lei, X. G.*; Guo, Y. X.*; Ndontchueng, M. M.*; Ma, L.*; et al.

International Journal of Modern Physics E, 15(7), p.1437 - 1445, 2006/10

https://doi.org/10.1142/S0218301306005125

Times Cited Count：3 Percentile：28.19(Physics, Nuclear)

Search for low-spin signature inversion in the $pi i_{13/2} bigotimes nu i_{13/2}$ bands in odd-odd $^{182,184,186}$ Au have been made through in-beam -ray spectroscopy techniques. The $pi i_{13/2} bigotimes nu i_{13/2}$ bands in the three nuclei have been identified and extended up to high-spin states. In particlular, the interband connection between the $pi i_{13/2} bigotimes nu i_{13/2}$ band and the ground-state band in $^{184}$ Au have been established, leading to a firm spin-and-parity assignment for the $pi i_{13/2} bigotimes nu i_{13/2}$ band. The low-spin signature inversion is found in the $pi i_{13/2} bigotimes nu i_{13/2}$ bands in $^{182,184,186}$ Au.

Journal Articles

Observation of a $pi rm h_{9/2} bigotimes nu rm i_{13/2}$ oblate band in $^{188}$ Tl

Zhou, X. H.*; Ma, L.*; Xing, Y. B.*; Zhang, Y. H.*; Guo, Y. X.*; Lei, X. G.*; Xie, C. Y.*; Oshima, Masumi; Toh, Yosuke; Koizumi, Mitsuo; et al.

European Physical Journal A, 28(3), p.271 - 275, 2006/06

https://doi.org/10.1140/epja/i2006-10060-6

Times Cited Count：2 Percentile：21.09(Physics, Nuclear)

Excited states in $^{188}$ Tl have been studied experimentally by in-beam -ray spectroscopy. A rotational band built on the $pi rm h_{9/2} bigotimes nu rm i_{13/2}$ configuration with oblate deformation has been established for $^{188}$ Tl. Based on the structure systematics of the oblate $pi rm h_{9/2} bigotimes nu rm i_{13/2}$ bands in heavier odd-odd Tl nuclei, we have tentatively proposed spin values for the new band in $^{188}$ Tl. The new oblate band shows low-spin signature inversion, and it can be interpreted qualitatively by the two-quasiparticle plus rotor model including a -dependent - residual interaction.

Journal Articles

Improvement of beam performance in the negative-ion based NBI system for JT-60U

Umeda, Naotaka; Grisham, L. R.*; Yamamoto, Takumi; Kuriyama, Masaaki; Kawai, Mikito; Oga, Tokumichi; Mogaki, Kazuhiko; Akino, Noboru; Yamazaki, Haruyuki*; Usui, Katsutomi; et al.

Nuclear Fusion, 43(7), p.522 - 526, 2003/07

https://doi.org/10.1088/0029-5515/43/7/302

Times Cited Count：39 Percentile：74.23(Physics, Fluids & Plasmas)

The Negative-ion based Neutral Beam Injection System (N-NBI) for JT-60U has been operating for plasma heating and non-inductive current drive since 1996. The target is inject of neutral beam into plasma with beam energy 500 keV, injection power 10 MW, for 10 seconds. Until now pulse duration time was restricted up to 5.3 seconds because of larger heat load of port limiter. Recently from the measurement of beam profile at 3.5m downstream from the ion source, it was found that the outermost beamlets in each segment were deflected outward. It was caused by non-uniform electric field by grooves. By improving this, outermost beamlet deflection angle was decreased from 14 mrad to 4 mrad. In this result, 10 seconds injection, which is target parameter, has achieved at 355 keV, 2.6MW, while pulse length was restricted up to 5.3 seconds by larger heat load of port limiter.

Journal Articles

Improving the performance of a negative-ion based neutral beam injector for JT-60U

Yamamoto, Takumi; Umeda, Naotaka; Kuriyama, Masaaki; Lei, G.*; Grisham, L. R.*; Kawai, Mikito; Oga, Tokumichi; JT-60 NBI-Team

Journal of Plasma and Fusion Research SERIES, Vol.5, p.474 - 477, 2002/00

The performance of a 500keV negative-ion based neutral beam injection system for the JT-60U has been enhanced significantly. By improving the beam divergence, 10-second operation of beam injection has been attained. Small peaks were observed in the beam profile measured at the near field. These peaks are clearly resulted from the deflection of the beamlets due to an unwanted electric field. Correction of the deflection reduced the heat load on the limiter at the injection port by more than 50%. The Doppler shifted spectrum from the negative ion beam was measured, and then indicated that electron stripping of the negative ion beam occurs primarily inside the extraction grid, as expected from theoretical consideration. The electron stripping contributed to half of the heat load on the grounded grid.