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Your search keyword '"C.M. Zou"' showing total 7 results
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7 results on '"C.M. Zou"'

1. Effects of high pressure and superheat temperature on microstructure evolution of Al-20Si alloy

Author

R. Zhang, C.M. Zou, Z.J. Wei, H.W. Wang, Z. Ran, and N. Fang

Subjects
Al-20Si alloy, High pressure solidification, Superheat temperature, Stability, Microstructure, Mining engineering. Metallurgy, TN1-997
Abstract

The microstructures of Al-20Si alloy solidified under different pressures (2 GPa and 3 GPa) and different superheat temperatures were investigated. The results demonstrate that the decrease of superheat temperature leads to the changes in morphology of the α-Al phase under high pressure (from dendritic, to cellular, to globular and to planar growth). Furthermore, a new mathematical model was developed to analyze interface stability under the combination effects of pressure and superheat temperature. The interface stability of α-Al phase in Al-20Si alloy was calculated at the pressure range of 2−3 GPa and the superheat temperature range of 0−600 K. The result shows that the transition superheat temperature of α-Al phase planar growth with the pressure of 2 GPa and 3 GPa is 53 K and 111 K, respectively. The interface of α-Al phase can remain stable at higher superheat temperature with the increase of pressure.

Published
2020
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6. Particle production at the AGS: an excitation function

Author

J.C. Dunlop, L. Ahle, Y. Akiba, K. Ashktorab, M.D. Baker, D. Beavis, H.C. Britt, J. Chang, C. Chasman, Z. Chen, Y.Y. Chu, T. Chujo, V. Cianciolo, B.A. Cole, H.J. Crawford, J.B. Cumming, R. Debbe, W. Eldredge, J. Engelage, S.-Y. Fung, E. Garcia, S. Gushue, H. Hamagaki, L. Hansen, R.S. Hayano, G. Heintzelman, E. Judd, J. Kang, E.-J. Kim, A. Kumagai, K. Kurita, J.-H. Lee, J. Luke, Y. Miake, A. Mignerey, B. Moskowitz, M. Moulson, C. Muentz, S. Nagamiya, K. Nagano, M.N. Namboodiri, C.A. Ogilvie, J. Olness, K. Oyama, L.P. Remsberg, H. Sako, T.C. Sangster, R. Seto, J. Shea, K. Shigaki, R. Soltz, S.G. Steadman, G.S.F. Stephans, T. Tamagawa, M.J. Tannenbaum, J.H. Thomas, S. Ueno-Hayashi, F. Videbæk, F. Wang, Y. Wu, H. Xiang, G.H. Xu, K. Yagi, H. Yao, W.A. Zajc, F. Zhu, B. Back, R.R. Betts, W.C. Chang, C.Y. Chi, S.Y. Fung, R. Ganz, A. Gillitzer, W.F. Henning, D.J. Hofman, B. Holzman, J.H. Kang, E.J. Kim, S.Y. Kim, Y. Kwon, D. McLeod, A.C. Mignerey, V. Nanal, R. Pak, A. Ruangma, D. Russ, P.J. Stanskas, H.Q. Wang, F.L.H. Wolfs, A.H. Wuosmaa, and C.M. Zou

Subjects
Physics, Excitation function, Nuclear physics, Nuclear and High Energy Physics, Differential invariant, High Energy Physics::Experiment, Multiplicity (chemistry), Atomic physics, Nuclear Experiment, Collision, Kinetic energy, Beam energy
Abstract

Experiments E866 and E917 at the AGS have measured the differential invariant yields of positive and negative charged kaons from Au+Au collisions at beam kinetic energies in the laboratory of 2, 4, 6, 8, and 10.8 A·GeV. At each beam energy, a multiplicity array is used to select on the centrality of the collision.

Published
1999
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7. Excitation Function of K$^+$ and $\pi^+$ Production in Au+Au Reactions at 2-10 AGeV

Author

L. Ahle, Y. Akiba, K. Ashktorab, M.D. Baker, D. Beavis, B. Budick, J. Chang, C. Chasman, Z. Chen, Y.Y. Chu, T. Chujo, J. Cumming, R. Debbe, J.C. Dunlop, W. Eldredge, K. Fleming, S.-Y. Fung, E. Garcia, S. Gushue, H. Hamagaki, R. Hayano, G.H. Heintzelman, J.H. Kang, E.J. Kim, A. Kumagai, K. Kurita, J.H. Lee, Y.K. Lee, Y. Miake, A.C. Mignerey, M. Moulson, C. Muentz, K. Nagano, C.A. Ogilvie, J. Olness, K. Oyama, L. Remsberg, H. Sako, R. Seto, J. Shea, K. Shigaki, S.G. Steadman, G.S.F. Stephans, T. Tamagawa, M.J. Tannenbaum, S. Ueno-Hayashi, F. Videbaek, H. Xiang, F. Wang, K. Yagi, F. Zhu, B.B. Back, R.R. Betts, W.C. Chang, C.Y. Chi, J.B. Cumming, S.Y. Fung, R. Ganz, A. Gillitzer, W.F. Henning, D.J. Hofman, B. Holzman, S.Y. Kim, Y. Kwon, D. McLeod, V. Nanal, R. Pak, A. Ruangma, D. Russ, P.J. Stanskas, H. Wang, F.L.H. Wolfs, A.H. Wuosmaa, G.H. Xu, H.B. Yao, and C.M. Zou

Subjects
Excitation function, Physics, Nuclear and High Energy Physics, Range (particle radiation), Hadron, Nuclear Theory, Kinetic energy, Nuclear physics, Pion, Pi, Production (computer science), High Energy Physics::Experiment, Nuclear Experiment, Beam (structure)
Abstract

Positive pion and kaon production from Au+Au reactions have been measured as a function of beam energy over the range 2.0-10.7~AGeV. Both the kaon and the pion production cross-sections at mid-rapidity are observed to increase steadily with beam kinetic energy. The ratio of K$^+$ to $\pi^+$ mid-rapidity yields increases from 0.0271$\pm0.0015\pm0.0014$ at 2.0~AGeV to 0.202$\pm0.005\pm0.010$ at 10.7~AGeV and is larger than the K$^+$/$\pi^+$ ratio from p+p reactions over the same beam energy region. There is no indication of an onset of any new production mechanism in heavy-ion reactions in this energy range beyond rescattering of hadrons., Comment: 9 pages, 4 figures, submitted to Phys. Lett. B

Published
1999

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