Search

Your search keyword '"Hu, Z.G."' showing total 156 results
Start Over Author "Hu, Z.G."
156 results on '"Hu, Z.G."'

2. Direct measurement of the 19F(p, αγ)16O reaction in JUNA

Author

Zhang L.Y., Su J., He J.J., Wiescher M., deBoer R.J., Kahl D., Chen Y.J., Li X.Y., Wang J.G., Zhang L., Cao F.Q., Zhang H., Zhang Z.C., Jiao T.Y., Sheng Y.D., Wang L.H., Song L.Y., Jiang X.Z., Li Z.M., Li E.T., Wang S., Lian G., Li Z.H., Tang X.D., Zhao H.W., Sun L.T., Wu Q., Li J.Q., Cui B.Q., Chen L.H., Ma R.G., Guo B., Xu S.W., Li J.Y., Qi N.C., Sun W.L., Guo X.Y., Zhang P., Chen Y.H., Zhou Y., Zhou J.F., He J.R., Shang C.S., Li M.C., Zhou X.H., Zhang Y.H., Zhang F.S., Hu Z.G., Xu H.S., Cheng J.P., and Liu W.P.

Subjects
Physics, QC1-999
Abstract

The 19F(p, αγ)16O reaction is of crucial importance for Galactic 19F abundances and CNO cycle loss in first generation Population III stars. Due to its extremely small cross sections, the 19F(p, αγ)16O reaction has not been measured in the low energy part of the Gamow window(70-200 keV). As a day-one campaign, the experiment was performed under the extremely low cosmicray-induced background environment of the China JinPing Underground Laboratory(CJPL), one of the deepest underground laboratories in the world. The γ-ray yields were measured over Ec.m. =72.4–344 keV, covering the full Gamow window for the first time. The direct experimental data will help people to expound the fluorine over-abundances, energy generation, as well as heavy-element nuclosynthesis scenario in asymptotic giant branch (AGB) stars, with the astrophysical model on the firm ground.

Published
2022
Full Text
View/download PDF

6. Time-of-flight detectors with improved timing performance for isochronous mass measurements at the CSRe

Author

Zhang, W., Tu, X.L., Wang, M., Zhang, Y.H., Xu, H.S., Litvinov, Yu. A., Blaum, K., Chen, R.J., Chen, X.C., Fu, C.Y., Ge, Z., Gao, B.S., Hu, Z.G., Huang, W.J., Litvinov, S.A., Liu, D.W., Ma, X.W., Mao, R.S., Mei, B., Shuai, P., Sun, B.H., Xia, J.W., Xiao, G.Q., Xing, Y.M., Xu, X., Yamaguchi, T., Yan, X.L., Yang, J.C., Yuan, Y.J., Zeng, Q., Zhang, X.Y., Zhao, H.W., Zhao, T.C., and Zhou, X.H.

Published
2014
Full Text
View/download PDF

22. Scattering of the halo nucleus 11Be from a lead target at 3.5 times the Coulomb barrier energy

Author

Duan, F.F., Yang, Y.Y., Wang, K., Moro, A.M., Guimarães, V., Pang, D.Y., Wang, J.S., Sun, Z.Y., Lei, Jin, Di Pietro, A., Liu, X., Yang, G., Ma, J.B., Ma, P., Xu, S.W., Bai, Z., Sun, X.X., Hu, Q., Lou, J.L., Xu, X.X., Li, H.X., Jin, S.Y., Ong, H.J., Liu, Q., Yao, J.S., Qi, H.K., Lin, C.J., Jia, H.M., Ma, N.R., Sun, L.J., Wang, D.X., Zhang, Y.H., Zhou, X.H., Hu, Z.G., and Xu, H.S.

Published
2020
Full Text
View/download PDF

23. Scattering of the halo nucleus Be from a lead target at 3.5 times the Coulomb barrier energy

Author

Duan, F.F., Yang, Y.Y., Wang, K., Moro, A.M., Guimarães, V., Pang, D.Y., Wang, J.S., Sun, Z.Y., Lei, Jin, Di Pietro, A., Liu, X., Yang, G., Ma, J.B., Ma, P., Xu, S.W., Bai, Z., Sun, X.X., Hu, Q., Lou, J.L., Xu, X.X., Li, H.X., Jin, S.Y., Ong, H.J., Liu, Q., Yao, J.S., Qi, H.K., Lin, C.J., Jia, H.M., Ma, N.R., Sun, L.J., Wang, D.X., Zhang, Y.H., Zhou, X.H., Hu, Z.G., and Xu, H.S.

Subjects
Nuclear Theory, Nuclear Experiment
Abstract

Angular distributions of quasielastic scattering and breakup of the neutron-rich halo nucleus $^{11}$Be on a $^{208}$Pb target at an incident energy of 140 MeV (about 3.5 times the Coulomb barrier) were measured at HIRFL-RIBLL. A strong suppression of the Coulomb nuclear interference peak is observed in the measured quasielastic scattering angular distribution. The result demonstrates for the first time the persistence of the strong breakup coupling effect reported so far for reaction systems involving neutron-halo nuclei at this relatively high incident energy. The measured quasielastic scattering cross sections are satisfactorily reproduced by continuum discretized coupled channel (CDCC) calculations as well as by the XCDCC calculations where the deformation of the $^{10}$Be core is taken into account. The angular and energy distributions of the $^{10}$Be fragments could also be well reproduced considering elastic breakup (CDCC and XCDCC) plus nonelastic breakup contributions, with the latter evaluated with the model by Ichimura, Austern and Vincent [1]. The comparison of the $^{10}$Be energy distributions with simple kinematical estimates evidence the presence of a significant post-acceleration effect which, in the (X)CDCC frameworks, is accounted for by continuum-continuum couplings.

Published
2020

25. Experimentally well-constrained masses of 27P and 27S: Implications for studies of explosive binary systems

Author

Sun, L.J., Xu, X.X., Hou, S.Q., Lin, C.J., José, J., Lee, J., He, J.J., Li, Z.H., Wang, J.S., Yuan, C.X., Herwig, F., Keegans, J., Budner, T., Wang, D.X., Wu, H.Y., Liang, P.F., Yang, Y.Y., Lam, Y.H., Ma, P., Duan, F.F., Gao, Z.H., Hu, Q., Bai, Z., Ma, J.B., Wang, J.G., Zhong, F.P., Wu, C.G., Luo, D.W., Jiang, Y., Liu, Y., Hou, D.S., Li, R., Ma, N.R., Ma, W.H., Shi, G.Z., Yu, G.M., Patel, D., Jin, S.Y., Wang, Y.F., Yu, Y.C., Zhou, Q.W., Wang, P., Hu, L.Y., Wang, X., Zang, H.L., Li, P.J., Zhao, Q.Q., Jia, H.M., Yang, L., Wen, P.W., Yang, F., Pan, M., Wang, X.Y., Hu, Z.G., Chen, R.F., Liu, M.L., Yang, W.Q., and Zhao, Y.M.

Published
2020
Full Text
View/download PDF

27. Experimentally well-constrained masses of P and S: Implications for studies of explosive binary systems

Author

Sun, L.J., Xu, X.X., Hou, S.Q., Lin, C.J., José, J., Lee, J., He, J.J., Li, Z.H., Wang, J.S., Yuan, C.X., Herwig, F., Keegans, J., Budner, T., Wang, D.X., Wu, H.Y., Liang, P.F., Yang, Y.Y., Lam, Y.H., Ma, P., Duan, F.F., Gao, Z.H., Hu, Q., Bai, Z., Ma, J.B., Wang, J.G., Zhong, F.P., Wu, C.G., Luo, D.W., Jiang, Y., Liu, Y., Hou, D.S., Li, R., Ma, N.R., Ma, W.H., Shi, G.Z., Yu, G.M., Patel, D., Jin, S.Y., Wang, Y.F., Yu, Y.C., Zhou, Q.W., Wang, P., Hu, L.Y., Wang, X., Zang, H.L., Li, P.J., Zhao, Q.Q., Jia, H.M., Yang, L., Wen, P.W., Yang, F., Pan, M., Wang, X.Y., Hu, Z.G., Chen, R.F., Liu, M.L., Yang, W.Q., and Zhao, Y.M.

Abstract

The mass of $^{27}$P is expected to impact the X-ray burst (XRB) model predictions of burst light curves and the composition of the burst ashes, but large uncertainties and inconsistencies still exist in the reported $^{27}$P masses. We have used the β-decay spectroscopy of $^{27}$S to determine the most precise mass excess of $^{27}$P to date to be −659(9) keV, which is 63 keV (2.3σ) higher and a factor of 3 more precise than the value recommended in the 2016 Atomic Mass Evaluation. Based on the new $^{27}$P mass, the Si26(p,γ)27P reaction rate and its uncertainty were recalculated using Monte Carlo techniques. We also estimated the previously unknown mass excess of $^{27}$S to be 17678(77) keV, based on the measured β-delayed two-proton energy and the Coulomb displacement energy relations. The impact of these well-constrained masses and reaction rates on the modeling of the explosive astrophysical scenarios has been investigated by post-processing XRB and hydrodynamic nova models. Compared to the model calculations based on the masses and rates from databases, the abundance of A=26 in the burst ashes is increased by a factor of 2.4, while no substantial change was found in the XRB energy generation rate or the light curve. Our calculation also suggests that $^{27}$S is not a significant waiting point in the rapid proton capture process, and the change of the Si26(p,γ)27P reaction rate is not sufficiently large to affect the conclusion previously drawn on the nova contribution to the synthesis of galactic $^{26}$Al.

Published
2020

30. Zn-doped GaSb epitaxial film absorption coefficients at terahertz frequencies and detector applications

Author

Hu, Z.G., Perera, A.G.U., Paltiel, Y., Raizman, A., and Sher, A.

Subjects
Absorption spectra -- Observations, Gallium compounds -- Optical properties, Epitaxy -- Research, Physics
Abstract

The 3-30-terahertz (THz) optical properties of p-type GaSb:Zn epitaxial films with different hole concentrations are investigated. A sublinear relationship between the absorption coefficient and the hole concentration is found to be higher than that for the previously used GaAs system and this result can be used for designing GaSb-based THz detectors.

Published
2005

40. Northern boundary of the “island of inversion” and triaxiality in 34Si

Author

Han, R., Li, X.Q., Jiang, W.G., Li, Z.H., Hua, H., Zhang, S.Q., Yuan, C.X., Jiang, D.X., Ye, Y.L., Li, J., Xu, F.R., Chen, Q.B., Meng, J., Wang, J.S., Xu, C., Sun, Y.L., Wang, C.G., Wu, H.Y., Niu, C.Y., Li, C.G., He, C., Jiang, W., Li, P.J., Zang, H.L., Feng, J., Chen, S.D., Liu, Q., Chen, X.C., Xu, H.S., Hu, Z.G., Yang, Y.Y., Ma, P., Ma, J.B., Jin, S.L., Bai, Z., Huang, M.R., Zhou, Y.J., Ma, W.H., Li, Y., Zhou, X.H., Zhang, Y.H., Xiao, G.Q., and Zhan, W.L.

Published
2017
Full Text
View/download PDF

41. Observation of β-delayed two-proton emission in the decay of 22Si

Author

Xu, X.X., Lin, C.J., Sun, L.J., Wang, J.S., Lam, Y.H., Lee, J., Fang, D.Q., Li, Z.H., Smirnova, N.A., Yuan, C.X., Yang, L., Wang, Y.T., Li, J., Ma, N.R., Wang, K., Zang, H.L., Wang, H.W., Li, C., Liu, M.L., Wang, J.G., Shi, C.Z., Nie, M.W., Li, X.F., Li, H., Ma, J.B., Ma, P., Jin, S.L., Huang, M.R., Bai, Z., Yang, F., Jia, H.M., Liu, Z.H., Wang, D.X., Yang, Y.Y., Zhou, Y.J., Ma, W.H., Chen, J., Hu, Z.G., Wang, M., Zhang, Y.H., Ma, X.W., Zhou, X.H., Ma, Y.G., Xu, H.S., Xiao, G.Q., and Zhang, H.Q.

Published
2017
Full Text
View/download PDF

42. Temperature dependent transport properties of p-[Pb.sub.1-x][Mn.sub.x]Se films

Author

Sun, Y.H., Lin, T., Gao, K.H., Hu, Z.G., Wu, H.Z., Yang, P.X., Dai, N., and Chu, J.H.

Subjects
Hall effect -- Analysis, Lead alloys -- Electric properties, Lead alloys -- Thermal properties, Manganese -- Electric properties, Manganese -- Thermal properties, Molecular beams -- Usage, Semiconductors -- Electric properties, Semiconductors -- Thermal properties, Physics
Abstract

Several Hall measurements are conducted to explain the different transport properties of the p-[Pb.sub.1-x][Mn.sub.x]Se films. The results demonstrate that these films approach the metal-insulator transition from the metallic end.

Published
2010

43. Ab initio calculations on the borate nonlinear optical crystal BaAlB[O.sub.3][F.sub.2]

Author

He Huang, Lin, Z.S., Lei Bai, Hu, Z.G., and Chen, C.T.

Subjects
Aluminum -- Optical properties, Aluminum -- Electric properties, Barium compounds -- Optical properties, Barium compounds -- Electric properties, Barium compounds -- Structure, Borates -- Optical properties, Borates -- Electric properties, Nonlinear optics -- Analysis, Physics
Abstract

The plane-wave pseudopotential method is used to compare the structural stability of newly developed BaAlB[O.sub.3][F.sub.2] (BABF) crystal and theoretically study the electronic structures and the linear and nonlinear optical properties of BABF. The results provide insight into the mechanism related to the optical properties and the contribution of the respective ionic group towards the crystal structure and stability of BABF.

Published
2009

44. Different mechanism of two-proton emission from proton-rich nuclei 23Al and 22Mg

Author

Ma, Y.G., Fang, D.Q., Sun, X.Y., Zhou, P., Togano, Y., Aoi, N., Baba, H., Cai, X.Z., Cao, X.G., Chen, J.G., Fu, Y., Guo, W., Hara, Y., Honda, T., Hu, Z.G., Ieki, K., Ishibashi, Y., Ito, Y., Iwasa, N., Kanno, S., Kawabata, T., Kimura, H., Kondo, Y., Kurita, K., Kurokawa, M., Moriguchi, T., Murakami, H., Ooishi, H., Okada, K., Ota, S., Ozawa, A., Sakurai, H., Shimoura, S., Shioda, R., Takeshita, E., Takeuchi, S., Tian, W.D., Wang, H.W., Wang, J.S., Wang, M., Yamada, K., Yamada, Y., Yasuda, Y., Yoneda, K., Zhang, G.Q., and Motobayashi, T.

Published
2015
Full Text
View/download PDF

45. Optical characterizations of heavily doped p-type Al(sub x)Ga(sub 1-x)As and GaAs epitaxial films at tetrahertz frequencies

Author

Hu, Z.G., Rinzan, B.M., Matsik, S.G., Perera, A.G. U., Winckel, G. Von, Stintz, A., and Krishna, S.

Subjects
Epitaxy -- Research, Aluminum compounds -- Optical properties, Aluminum compounds -- Electric properties, Dielectric films -- Research, Thin films -- Research, Gallium arsenide -- Optical properties, Gallium arsenide -- Electric properties, Physics
Abstract

The optical properties of p-type Al(sub x)Ga(sub 1-x)As epitaxial films with different beryllium and carbon doping concentrations were investigated by far-infrared reflectance spectroscopy in the 1.5-15-THz frequency range. Optical properties were obtained using a three-phase model, which agrees with the experimental reflectance spectral data.

Published
2005

48. Different mechanism of two-proton emission from proton-rich nuclei Al and Mg

Author

Ma, Y.G., Fang, D.Q., Sun, X.Y., Zhou, P., Togano, Y., Aoi, N., Baba, H., Cai, X.Z., Cao, X.G., Chen, J.G., Fu, Y., Guo, W., Hara, Y., Honda, T., Hu, Z.G., Ieki, K., Ishibashi, Y., Ito, Y., Iwasa, N., Kanno, S., Kawabata, T., Kimura, H., Kondo, Y., Kurita, K., Kurokawa, M., Moriguchi, T., Murakami, H., Ooishi, H., Okada, K., Ota, S., Ozawa, A., Sakurai, H., Shimoura, S., Shioda, R., Takeshita, E., Takeuchi, S., Tian, W.D., Wang, H.W., Wang, J.S., Wang, M., Yamada, K., Yamada, Y., Yasuda, Y., Yoneda, K., Zhang, G.Q., and Motobayashi, T.

Abstract

Two-proton relative momentum (qpp) and opening angle (θpp) distributions from the three-body decay of two excited proton-rich nuclei, namely Al23→p+p+Na21 and Mg22→p+p+Ne20, have been measured with the projectile fragment separator (RIPS) at the RIKEN RI Beam Factory. An evident peak at qpp∼20 MeV/c as well as a peak in θpp around 30° are seen in the two-proton break-up channel from a highly-excited 22Mg. In contrast, such peaks are absent for the 23Al case. It is concluded that the two-proton emission mechanism of excited 22Mg is quite different from the 23Al case, with the former having a favorable diproton emission component at a highly excited state and the latter dominated by the sequential decay process.

Published
2015

49. Charge and frequency resolved isochronous mass spectrometry and the mass of 51Co

Author

Shuai, P., Xu, H.S., Tu, X.L., Zhang, Y.H., Sun, B.H., Wang, M., Litvinov, Yu.A., Blaum, K., Zhou, X.H., He, J.J., Sun, Y., Kaneko, K., Yuan, Y.J., Xia, J.W., Yang, J.C., Audi, G., Yan, X.L., Chen, X.C., Jia, G.B., Hu, Z.G., Ma, X.W., Mao, R.S., Mei, B., Sun, Z.Y., Wang, S.T., Xiao, G.Q., Xu, X., Yamaguchi, T., Yamaguchi, Y., Zang, Y.D., Zhao, H.W., Zhao, T.C., Zhang, W., and Zhan, W.L.

Published
2014
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results