Quantum transition of a deuteron beam

Dennis Sivers

The coherent spin rotation of stored particle beams produces macroscopic states with familiar quantum properties. Because massive quantum systems with spin greater than or equal to one display instructive interference effects not accessible with spin one‐half particles, we discuss the sequential rotation and decoherence of a stored polarized deuteron beam. Experimental measurements on such systems should produce unique quantum effects.

D. I. Blokhint︠s︡ev

Jean Salmon

R. M. Macfarlane, Roger J. Reeves, Glynn D. Jones

We report the observation of persistent spectral hole burning due to a mechanism that is new to inorganic materials, i.e., light-induced deuteron (or proton) tunneling. Measurements were made on (3)H(4) ? (1)D(2) transitions of SrF(2):Pr(3+) centers having two D(-) ions as near neighbors. The spectral holes exhibit hyperfine structure dominated by very large (~100-MHz) pseudoquadrupole splittings in the singlet ground state.

Weijie Du, Peng Yin, Guangyao Chen +2 more

We develop and test an ab initio time-dependent Basis Function (tBF) method to solve non-perturbative and time-dependent problems in quantum mechanics. For our test problem, we apply this method to the Coulomb excitation of the deuteron by an impinging heavy ion. In the tBF method applied to deuterium, we employ wave functions for its bound and excited states to calculate its transition probabilities and the r.m.s. radius during the scattering process. For comparison, corresponding results based on first-order perturbation theory are also provided. For the Coulomb excitation process in a weak and time-varying Coulomb field, where higher-order effects are negligible, we obtain good agreement of the results based on these two methods. The tBF method is then applied to the Coulomb excitation process with stronger external field. The higher-order effects, such as those appearing in the reorientation of the polarization of the deuteron system, are analyzed.

Y. Fang, Christina Gao, Ying-Ying Li +6 more