# Observation of a shape resonance in the athinsp[sup 3][summation][sub u][sup +] state of [sup 7]Li[sub 2]

## Abstract

Using the most accurate potential curves available for the athinsp[sup 3][summation][sub u][sup +] and Xthinsp[sup 1][summation][sub g][sup +] states of lithium molecules, we compute the positions of shape resonances. We also calculate the deexcitation probability from a bound level v[sup [prime]] with rotational number N[sup [prime]] to the continuum of the lower state, and conclude that a shape resonance should be measurable for the transition 2thinsp[sup 3][product][sub g][r arrow]athinsp[sup 3][summation][sub u][sup +]. Such a shape resonance has been identified from the spectra of the transition from the v[sup [prime]]=2,N[sup [prime]]=4 level of 2thinsp[sup 3][product][sub g] into the N[sup [double prime]]=4 continuum of athinsp[sup 3][summation][sub u][sup +]. Its position is in good agreement with the theoretical prediction. [copyright] [ital 1999] [ital The American Physical Society]

- Authors:

- (Institute for Theoretical Atomic and Molecular Physics (ITAMP), Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138 (United States))
- (Department of Physics, Temple University, Philadelphia, Pennsylvania 19122 (United States))
- (Department of Modern Applied Physics, Tsinghua University, Beijing 100084 (China))

- Publication Date:

- OSTI Identifier:
- 6469246

- Alternate Identifier(s):
- OSTI ID: 6469246

- Resource Type:
- Journal Article

- Journal Name:
- Physical Review A

- Additional Journal Information:
- Journal Volume: 60:3; Journal ID: ISSN 1050-2947

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 74 ATOMIC AND MOLECULAR PHYSICS; BOUND STATE; DE-EXCITATION; ELECTRONIC STRUCTURE; ENERGY-LEVEL TRANSITIONS; FLUORESCENCE; LITHIUM; LITHIUM COMPOUNDS; POTENTIAL ENERGY; RESONANCE; ROTATION-VIBRATION MODEL; VIBRATIONAL STATES; ALKALI METAL COMPOUNDS; ALKALI METALS; COLLECTIVE MODEL; ELEMENTS; ENERGY; ENERGY LEVELS; EXCITED STATES; LUMINESCENCE; MATHEMATICAL MODELS; METALS; NUCLEAR MODELS 664200* -- Spectra of Atoms & Molecules & their Interactions with Photons-- (1992-); 664100 -- Theory of Electronic Structure of Atoms & Molecules-- (1992-)

### Citation Formats

```
Cote, R., Dalgarno, A., Lyyra, A.M., and Li, L.
```*Observation of a shape resonance in the athinsp[sup 3][summation][sub u][sup +] state of [sup 7]Li[sub 2]*. United States: N. p., 1999.
Web. doi:10.1103/PhysRevA.60.2063.

```
Cote, R., Dalgarno, A., Lyyra, A.M., & Li, L.
```*Observation of a shape resonance in the athinsp[sup 3][summation][sub u][sup +] state of [sup 7]Li[sub 2]*. United States. doi:10.1103/PhysRevA.60.2063.

```
Cote, R., Dalgarno, A., Lyyra, A.M., and Li, L. Wed .
"Observation of a shape resonance in the athinsp[sup 3][summation][sub u][sup +] state of [sup 7]Li[sub 2]". United States. doi:10.1103/PhysRevA.60.2063.
```

```
@article{osti_6469246,
```

title = {Observation of a shape resonance in the athinsp[sup 3][summation][sub u][sup +] state of [sup 7]Li[sub 2]},

author = {Cote, R. and Dalgarno, A. and Lyyra, A.M. and Li, L.},

abstractNote = {Using the most accurate potential curves available for the athinsp[sup 3][summation][sub u][sup +] and Xthinsp[sup 1][summation][sub g][sup +] states of lithium molecules, we compute the positions of shape resonances. We also calculate the deexcitation probability from a bound level v[sup [prime]] with rotational number N[sup [prime]] to the continuum of the lower state, and conclude that a shape resonance should be measurable for the transition 2thinsp[sup 3][product][sub g][r arrow]athinsp[sup 3][summation][sub u][sup +]. Such a shape resonance has been identified from the spectra of the transition from the v[sup [prime]]=2,N[sup [prime]]=4 level of 2thinsp[sup 3][product][sub g] into the N[sup [double prime]]=4 continuum of athinsp[sup 3][summation][sub u][sup +]. Its position is in good agreement with the theoretical prediction. [copyright] [ital 1999] [ital The American Physical Society]},

doi = {10.1103/PhysRevA.60.2063},

journal = {Physical Review A},

issn = {1050-2947},

number = ,

volume = 60:3,

place = {United States},

year = {1999},

month = {9}

}