Positronic ions of metallic clusters

被引：3

作者：

Connerade, JP ^{[1
]}

Ipatov, A

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2BZ, England

[2] St Petersburg State Tech Univ, Dept Expt Phys, St Petersburg 195021, Russia

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 1998年 / 31卷 / 06期

关键词：

D O I：

10.1088/0953-4075/31/6/004

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate the possibility of a new class of positronic ions, formed by attaching a positron to the induced dipole of a metallic cluster. It is shown that such a system is made stable by the inclusion of the polarization potential. Ground state and some excited state energies are given, both for the positronic and for the corresponding electronic ion of Nas and Nato clusters. We also give total cross sections for capture in both cases as a function of projectile energy up to 3 eV, and compare the results for both species of ions.

引用

页码：L273 / L279

页数：7

共 10 条

[1] MANY-BODY CALCULATION OF NEGATIVE-IONS USING THE DYSON EQUATION [J].

CHERNYSHEVA, LV ;

GRIBAKIN, GF ;

IVANOV, VK ;

KUCHIEV, MY .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1988, 21 (15) :L419-L425

[2] Giant resonances in photon emission spectra of metal clusters [J].

Connerade, JP ;

Solovyov, AV .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1996, 29 (15) :3529-3547

[3] Radiative electron capture by metallic clusters [J].

Connerade, JP ;

Solovyov, AV .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1996, 29 (02) :365-375

[4]

CONNERADE JP, 1991, ADV ATOM MOL OPT PHY, V29, P325

[5] BOUND-STATES OF POSITRONS AND NEUTRAL ATOMS [J].

DZUBA, VA ;

FLAMBAUM, VV ;

GRIBAKIN, GF ;

KING, WA .

PHYSICAL REVIEW A, 1995, 52 (06) :4541-4546

[6] Electron attachment to metallic clusters [J].

Ipatov, A ;

Connerade, JP ;

Gerchikov, LG ;

Solov'yov, AV .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1998, 31 (01) :L27-L34

[7] ELECTRONIC SHELL STRUCTURE AND ABUNDANCES OF SODIUM CLUSTERS [J].

KNIGHT, WD ;

CLEMENGER, K ;

DEHEER, WA ;

SAUNDERS, WA ;

CHOU, MY ;

COHEN, ML .

PHYSICAL REVIEW LETTERS, 1984, 52 (24) :2141-2143

[8] OBSERVATION OF THE POSITRONIUM NEGATIVE-ION [J].

MILLS, AP .

PHYSICAL REVIEW LETTERS, 1981, 46 (11) :717-720

[9] Positronic lithium, an electronically stable Li-e(+) ground state [J].

Ryzhikh, GG ;

Mitroy, J .

PHYSICAL REVIEW LETTERS, 1997, 79 (21) :4124-4126

[10] FORMATION OF POSITRONIUM HYDRIDE [J].

SCHRADER, DM ;

JACOBSEN, FM ;

FRANDSEN, NP ;

MIKKELSEN, U .

PHYSICAL REVIEW LETTERS, 1992, 69 (01) :57-60

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