Transition from attractive to repulsive forces between dust molecules in a plasma sheath

被引：249

作者：

Melzer, A

Schweigert, VA

Piel, A

机构：

[1] Univ Kiel, Inst Expt & Angew Phys, D-24098 Kiel, Germany

[2] Russian Acad Sci, Inst Theoret & Appl Mech, Novosibirsk 630090, Russia

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.83.3194

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The electrostatic interaction of a system of two single dust particles in a plasma-sheath environment with flowing ions has been investigated quantitatively. It is shown that attractive net "binding" forces between the negatively charged particles exist, leading to the formation of a dust molecule. By laser manipulation of the dust particles, it is demonstrated that the attraction is asymmetric in such a way that it acts only on one of the particles. Moreover, the net forces between the particles can be reversibly changed between attraction and repulsion.

引用

页码：3194 / 3197

页数：4

共 20 条

[1] COULOMB LATTICE IN A WEAKLY IONIZED COLLOIDAL PLASMA
CHU, JH
LIN, I
[J]. PHYSICA A, 1994, 205 (1-3): : 183 - 190
[2] DIRECT OBSERVATION OF COULOMB CRYSTALS AND LIQUIDS IN STRONGLY COUPLED RF DUSTY PLASMAS
CHU, JH
I, L
[J]. PHYSICAL REVIEW LETTERS, 1994, 72 (25) : 4009 - 4012
[3] OBSERVATION OF COULOMB-CRYSTAL FORMATION FROM CARBON PARTICLES GROWN IN A METHANE PLASMA
HAYASHI, Y
TACHIBANA, K
[J]. JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1994, 33 (6A): : L804 - L806
[4] Laser-excited dust lattice waves in plasma crystals
Homann, A
Melzer, A
Peters, S
Madani, R
Piel, A
[J]. PHYSICS LETTERS A, 1998, 242 (03) : 173 - 180
[5] Measuring the charge on single particles by laser-excited resonances in plasma crystals
Homann, A
Melzer, A
Piel, A
[J]. PHYSICAL REVIEW E, 1999, 59 (04): : R3835 - R3838
[6] PLASMA DUST AS MODEL CRYSTALS
MADDOX, J
[J]. NATURE, 1994, 370 (6489) : 411 - 411
[7] POLARIZED SUPERSONIC PLASMA-FLOW SIMULATION FOR CHARGED BODIES SUCH AS DUST PARTICLES AND SPACECRAFT
MELANDSO, F
GOREE, J
[J]. PHYSICAL REVIEW E, 1995, 52 (05): : 5312 - 5326
[8] MELTZER A, 1994, PHYS LETT A, V191, P301
[9] Structure and stability of the plasma crystal
Melzer, A
Schweiger, VA
Schweigert, IV
Homann, A
Peters, S
Piel, A
[J]. PHYSICAL REVIEW E, 1996, 54 (01): : R46 - R49
[10] Experimental investigation of the melting transition of the plasma crystal
Melzer, A
Homann, A
Piel, A
[J]. PHYSICAL REVIEW E, 1996, 53 (03): : 2757 - 2766

← 1 2 →