NDLI: Indirect techniques in nuclear astrophysics : Asymptotic Normalization Coefficient and Trojan Horse

Content Provider	Springer Nature Link
Author	Mukhamedzhav, A. M. Blokhintsev, L. D. Brown, B. A. Burjan, V. Cherubini, S. Gagliardi, C. A. Irgaziev, B. F. Kroha, V. Nunes, F. M. Pirlepesov, F. Pizzone, R. G. Roma, S. Spitaleri, C. Tang, X. D. Trache, L. Tribble, R. E. Tumi, A.
Copyright Year	2006
Abstract	Owing to the presence of the Coulomb barrier at astrophysically relevant kinetic energies it is very difficult, or sometimes impossible, to measure astrophysical reaction rates in the laboratory. That is why different indirect techniques are being used along with direct measurements. Here we address two important indirect techniques, the asymptotic normalization coefficient (ANC) and the Trojan Horse (TH) methods. We discuss the application of the ANC technique for calculation of the astrophysical processes in the presence of subthreshold bound states, in particular, two different mechanisms are discussed: direct capture to the subthreshold state and capture to the low-lying bound states through the subthreshold state, which plays the role of the subthreshold resonance. The ANC technique can also be used to determine the interference sign of the resonant and nonresonant (direct) terms of the reaction amplitude. The TH method is unique indirect technique allowing one to measure astrophysical rearrangement reactions down to astrophysically relevant energies. We explain why there is no Coulomb barrier in the sub-process amplitudes extracted from the TH reaction. The expressions for the TH amplitude for direct and resonant cases are presented.
Starting Page	205
Ending Page	215
Page Count	11
File Format	PDF
ISSN	14346001
Journal	The European Physical Journal A - Hadrons and Nuclei
Volume Number	27
Issue Number	1
e-ISSN	1434601X
Language	English
Publisher	Società Italiana di Fisica
Publisher Date	2006-03-15
Publisher Place	Bologna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Elementary Particles and Nuclei Nuclear Physics, Heavy Ions, Hadrons Nuclear Fusion
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics

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