Antiscreening channels for ion{endash}ion collisional excitations in dense plasmas

Journal Article · Wed Oct 01 04:00:00 EDT 1997 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.872244· OSTI ID:542588

Yoon, J; Jung, Y ^[1]

---

1. Department of Physics, Hanyang University, Ansan, Kyunggi-Do 425-791, South (Korea)

Plasma-screening effects are investigated on antiscreening channels for excitation of a one-electron target by a one-electron projectile in dense plasmas. The interaction Hamiltonian in dense plasmas is obtained by an appropriate form of the nonspherical Debye{endash}H{umlt u}ckel potentials. Semiclassical straight-line trajectory method is applied to the ion projectile path in order to visualize the antiscreening transition probability in dense plasmas as a function of the impact parameter and the collision energy. The plasma screening effects reduce the transition probabilities, especially, in the dipole{endash}dipole transition. The maximum position of the transition probability is receding from the target nucleus with increasing projectile energy for the dipole{endash}dipole and dipole{endash}quadrupole excitations. However, in the quadrupole{endash}quadrupole excitation, the maximum position is getting closer to the target nucleus with increasing projectile energy. The quadrupole transitions (dipole{endash}quadrupole and quadrupole{endash}quadrupole) show the second maximum which is due to the double peaks of the 2s radial distribution function. {copyright} {ital 1997 American Institute of Physics.}

• OSTI ID: 542588
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 10 Vol. 4; ISSN 1070-664X; ISSN PHPAEN
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DISTRIBUTION FUNCTIONS
EXCITATION
ION-ION COLLISIONS
NUCLEAR SCREENING
PLASMA
PLASMA DENSITY