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Pregled bibliografske jedinice broj: 643182

Lifetime measurement of the 6.79 MeV state in 15O with the AGATA demonstrator.


Michelagnoli, C.; Depalo, R.; Ur, C.A.; Menegazzo, R.; Broggini; C., Bazzacco, D.; Caciolli, A.; Farnea, E.; Lunardi, S.; Bemmerer, D. et al.
Lifetime measurement of the 6.79 MeV state in 15O with the AGATA demonstrator. // AIP Conference Proceedings Volume 1484
Wako, Japan: American Institute of Physics, 2012. str. 281-286 (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)


Naslov
Lifetime measurement of the 6.79 MeV state in 15O with the AGATA demonstrator.

Autori
Michelagnoli, C. ; Depalo, R. ; Ur, C.A. ; Menegazzo, R. ; Broggini ; C., Bazzacco, D. ; Caciolli, A. ; Farnea, E. ; Lunardi, S. ; Bemmerer, D. ; Keeley, N. ; Erhard, M. ; Fülöp, Zs. ; Gottardo, A. ; Marta, M. ; Mengoni, D. ; Mijatović, Tea ; Recchia, F. ; Rossi-Alvarez, C. ; Szücs, T. ; Valiente-Dobon, J.J.

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
AIP Conference Proceedings Volume 1484 / - : American Institute of Physics, 2012, 281-286

ISBN
978-0-7354-1096-1

Skup
ORIGIN OF MATTER AND EVOLUTION OF GALAXIES 2011

Mjesto i datum
Wako, Japan, 14–17.11. 2011

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Doppler shift; Monte Carlo methods; nuclei with mass number 6 to 19; proton-nucleus reactions

Sažetak
The preliminary results of a new direct measurement of the lifetime of the first excited 3/2+ state in 15O are discussed. An accurate evaluation of this lifetime is of paramount importance for the determination of the cross section of the 14N(p, γ)15O reaction, the slowest one in the CNO cycle, at the energies of the solar Gamow peak. The 2H(14N, 15O)n reaction in inverse kinematics at 32MeV beam energy (XTU Tandem, LNL) was used to populate the level of interest, which decays via a 6.79 MeV E1 gamma-ray transition to the ground state. Gamma rays were detected with 4 triple clusters of HPGe detectors of the AGATA Demonstrator array. The energy resolution and position sensitivity of this state-of-the-art gamma-ray spectrometer have been exploited to investigate the Doppler Shift Attenuation effect on the lineshape of the gamma-ray peak in the energy spectrum. The deconvolution of the lifetime effects from those due to the kinematics of the emitting nuclei has been performed using detailed Monte Carlo simulations of the gamma emission and detection. CDCC-CRC calculations for the nucleon transfer process have been used for this purpose and preliminary results are shown.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
098-1191005-2879 - Fizika teških iona (Zoran Basrak, )
098-1191005-2890 - Eksperimentalno istraživanje atomske jezgre: struktura i reakcije (Suzana Szilner, )

Ustanove
Institut "Ruđer Bošković", Zagreb

Autor s matičnim brojem:
Tea Mijatović, (330335)