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Spectra and magnetic properties of large spins in external fields

Kalatsky, V. A.; Pokrovsky, Valery L. (American Physical Society, 1999)

Spectra and magnetic properties of large spins J (e.g., spins possessed by ions or molecules), placed into a crystal electric field (CEF) of an arbitrary symmetry point group, are shown to change drastically when J changes ...

P(t) Dependence of Transverse Flow in Relativistic Heavy-Ion Collisions

Li, Bao-An; Ko, Che Ming; Li, GQ. (American Physical Society, 1996)

The strength of transverse flow is examined as a function of transverse momentum p(t) using a simple, transversely moving thermal model and a more realistic, relativistic transport model. It is shown that the p(t) dependence ...

Simple Heuristic Derivation of the Universal Jump in the Superfluid Density of 2-Dimensional Superfluids

Hu, Chia-Ren. (American Physical Society, 1992)

A simple heuristic derivation is given for the universal jump in the superfluid density rho(s) at the transition temperature T(c) of a two-dimensional superfluid. It is based on the mathematical equivalence of the Hamiltonians ...

K+ production in baryon-baryon and heavy-ion collisions

Li, GQ; Ko, Che Ming; Chung, WS. (American Physical Society, 1998)

Kaon production cross sections in nucleon-nucleon, nucleon-Delta, and Delta-Delta interactions are studied in a boson exchange model. For the latter two interactions, the exchanged pion can be on-mass shell

Quenching Collisions of Low-Energy Metastable Multiply-Charged Argon Ions

Church, David A.; Yang, L. S.; Tu, S. G. (American Physical Society, 1994)

Quenching rates have been measured for selected metastable levels of Ar(q+) ions (q = 2, 3, 9, and 10) stored in a Kingdon ion trap, with mean energies of 262q eV and 181q eV. Effective quenching cross sections derived ...

Probing the softest region of the nuclear equation of state

Li, Ba; Ko, Che Ming. (American Physical Society, 1998)

An attractive, energy-dependent mean-field potential for baryons is introduced in order to generate a soft region in the nuclear equation of state, as suggested by recent lattice QCD calculations of baryon-free matter at ...

Effects of (N)over-Barn Polarization on Vector-Meson Masses at Finite-Temperature

Song, C. S.; Xia, P. W.; Ko, Che Ming. (American Physical Society, 1995)

Effects of (N) over bar N polarization on vector meson (rho and omega) masses at finite temperature are studied. Including a reduced nucleon mass in a hot matter, we find that the reduction of vector meson masses due to ...

Fragmentation Barriers of Toroidal and Bubble Nuclei

Xu, HM; Gagliardi, Carl A.; Tribble, Robert E.; Wong, C. Y. (American Physical Society, 1994)

With an improved Boltzmann-Uehling-Uhlenbeck model, the deformation energy surfaces in reactions leading to the formation of toroidal and bubble nuclei are examined for central Mo-92+Mo-92 collisions. We found that the ...

The N-14(Be-7,B-8)C-13 reaction and the Be-7(p,gamma)B-8 S factor

Azhari, A.; Burjan, V.; Carstoiu, F.; Gagliardi, Carl A.; Kroha, V.; Mukhamedzhanov, AM; Tang, X.; Trache, L.; Tribble, Robert E. (American Physical Society, 1999)

The N-14(Be-7,B-8)C-13 reaction was studied using an 85 MeV Be-7 radioactive beam. The asymptotic normalization coefficients for the virtual transitions Be-7+pB-8 were determined from the measured cross section. These ...

Kaon Production from Hot and Dense Matter Formed in Heavy-Ion Collisions

Brown, G. E.; Ko, Che Ming; Wu, Z. G.; Xia, L. H. (American Physical Society, 1991)

In heavy-ion collisions, kaons can be produced from baryon-baryon, meson-baryon, and meson-meson interactions. Simple meson-exchange models are introduced to study kaon production from these processes in the free space. ...