Is There a Pronounced Giant Dipole Resonance in {sup 4}He?

Journal Article · Thu May 01 04:00:00 EDT 1997 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.78.4015· OSTI ID:509061

Efros, V D ^[1]; Efros, V D ^[2]; Leidemann, W; Orlandini, G ^[3]; Orlandini, G ^[4]

---

1. European Centre for Theoretical Nuclear Physics and Related Areas, Villa Tambosi, I-38050 Villazzano (Trento) (Italy)
2. Russian Research Centre Kurchatov Institute, Kurchatov Square 1, 123182 Moscow (Russia)
3. Dipartimento di Fisica, Universita di Trento, I-38050 Povo (Trento) (Italy)
4. Istituto Nazionale di Fisica Nucleare, Gruppo collegato di Trento (Italy)

A four-nucleon calculation of the total {sup 4}He photodisintegration cross section is performed. The full final-state interaction is taken into account for the first time. This is achieved via the method of the Lorentz integral transform. Semirealistic NN interactions are employed. Different from the known partial two-body {sup 4}He( {gamma},n){sup 3} He and {sup 4}He( {gamma},p){sup 3} H cross sections our total cross section exhibits a pronounced giant resonance. Thus, in contrast to older ({gamma},np) data, we predict quite a strong contribution of the ({gamma},np) channel at the giant resonance peak energy. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 509061
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 21 Vol. 78; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CROSS SECTIONS
DIPOLES
ENERGY
FINAL-STATE INTERACTIONS
FOUR-BODY PROBLEM
GIANT RESONANCE
HELIUM 4
LORENTZ TRANSFORMATIONS