Vibrational state distribution of Na-2(+) ions created in ultracold collisions

被引：20

作者：

Blange, JJ

Zijlstra, JM

Amelink, A

Urbain, X

Rudolph, H

vanderStraten, P

Beijerinck, HCW

Heideman, HGM

机构：

[1] Debye Institute, Department of Atomic and Interface Physics, Utrecht University, Utrecht, 3508

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 78卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.78.3089

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The vibrational distribution P(v) of Na-2(+) ions created in ultracold collisions in a magneto-optical trap has been determined. Only two vibrational states with v = 2 and 3 are populated and we find P(2) = 0.29 +/- 0.02 and P(3) = 0.71 +/- 0.02. The results provide conclusive evidence that the ionization mechanism is photoassociative autoionization, and not photoassociative photoionization, and will form a fundamental test for the theoretical description of the process.

引用

收藏

页码：3089 / 3092

页数：4

相关论文

共 16 条

[1] Wavelength-dependent photodissociation as a probe for vibrational energy distributions in molecular ions [J].

Blange, JJ ;

Urbain, X ;

Rudolph, H ;

Dijkerman, HA ;

Beijerinck, HCW ;

Heideman, HGM .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1996, 29 (13) :2763-2773

[2] Vibrational state distributions resulting from associative ionization in Na(3p)-Na(3p) collisions [J].

Blange, JJ ;

Urbain, X ;

Rudolph, H ;

Dijkerman, HA ;

Beijerinck, HCW ;

Heideman, HGM .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1997, 30 (03) :565-581

[3] DOUBLY-EXCITED STATES FOR THE NA-2 MOLECULE - APPLICATION TO THE DYNAMICS OF THE ASSOCIATIVE IONIZATION REACTION [J].

DULIEU, O ;

MAGNIER, S ;

MASNOUSEEUWS, F .

ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS, 1994, 32 (03) :229-240

[4] OBSERVATION OF ASSOCIATIVE IONIZATION OF ULTRACOLD LASER-TRAPPED SODIUM ATOMS [J].

GOULD, PL ;

LETT, PD ;

JULIENNE, PS ;

PHILLIPS, WD ;

THORSHEIM, HR ;

WEINER, J .

PHYSICAL REVIEW LETTERS, 1988, 60 (09) :788-791

[5] WAVELENGTH DEPENDENCE OF THE ABSOLUTE NA2+(1(2)SIGMA-U+[-1(2)SIGMA-G+) PHOTODISSOCIATION CROSS-SECTION [J].

KORTYNA, A ;

REISNER, D ;

UNRUH, J ;

HUWEL, L .

PHYSICAL REVIEW A, 1994, 50 (02) :1399-1408

[6] SPECTROSCOPY OF NA-2 BY PHOTOASSOCIATION OF LASER-COOLED NA [J].

LETT, PD ;

HELMERSON, K ;

PHILLIPS, WD ;

RATLIFF, LP ;

ROLSTON, SL ;

WAGSHUL, ME .

PHYSICAL REVIEW LETTERS, 1993, 71 (14) :2200-2203

[7]

LETT PD, 1995, AIP C P, V329, P289

[8] PHOTOASSOCIATION OF ATOMS IN ULTRACOLD COLLISIONS PROBED BY WAVE-PACKET DYNAMICS [J].

MACHHOLM, M ;

GIUSTISUZOR, A ;

MIES, FH .

PHYSICAL REVIEW A, 1994, 50 (06) :5025-5036

[9] PHOTOASSOCIATION SPECTRUM OF ULTRACOLD RB ATOMS [J].

MILLER, JD ;

CLINE, RA ;

HEINZEN, DJ .

PHYSICAL REVIEW LETTERS, 1993, 71 (14) :2204-2207

[10] Long-range predissociation in two-color photoassociation of ultracold Na atoms [J].

Molenaar, PA ;

vanderStraten, P ;

Heideman, HGM .

PHYSICAL REVIEW LETTERS, 1996, 77 (08) :1460-1463