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Sökning: WFRF:(Fülöp Zs.) > (2015-2019) > Resonance strengths...
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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 04047naa a2200421 4500 | |
| 001 | oai:DiVA.org:ltu-75596 | |
| 003 | SwePub | |
| 008 | 190820s2019 | |||||||||||000 ||eng| | |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-755962 URI |
| 024 | 7 | a https://doi.org/10.1103/PhysRevC.100.0158052 DOI |
| 040 | a (SwePub)ltu | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a ref2 swepub-contenttype |
| 072 | 7 | a art2 swepub-publicationtype |
| 100 | 1 | a Gyürky, Gy.u Institute for Nuclear Research (Atomki), Debrecen, Hungary4 aut |
| 245 | 1 0 | a Resonance strengths in the 14N( p,γ)15O astrophysical key reaction measured with activation |
| 264 | 1 | b American Physical Society,c 2019 |
| 338 | a print2 rdacarrier | |
| 500 | a Validerad;2019;Nivå 2;2019-08-20 (johcin) | |
| 520 | a Background: The 14N(p,γ)15O reaction plays a vital role in various astrophysical scenarios. Its reaction rate must be accurately known in the present era of high precision astrophysics. The cross section of the reaction is often measured relative to a low energy resonance, the strength of which must therefore be determined precisely.Purpose: The activation method, based on the measurement of 15O decay, has not been used in modern measurements of the 14N(p,γ)15O reaction. The aim of the present work is to provide strength data for two resonances in the 14N(p,γ)15O reaction using the activation method. The obtained values are largely independent from previous data measured by in-beam γ spectroscopy and are free from some of their systematic uncertainties.Method: Solid state TiN targets were irradiated with a proton beam provided by the Tandetron accelerator of Atomki using a cyclic activation. The decay of the produced 15O isotopes was measured by detecting the 511 keV positron annihilation γ rays.Results: The strength of the Ep=278keV resonance was measured to be ωγ278=(13.4±0.8)meVwhile for the Ep=1058keV resonance ωγ1058=(442±27)meV.Conclusions: The obtained Ep=278 keV resonance strength is in fair agreement with the values recommended by two recent works. However, the Ep=1058keV resonance strength is about 20% higher than the previous value. The discrepancy may be caused in part by a previously neglected finite target thickness correction. As only the low energy resonance is used as a normalization point for cross section measurements, the calculated astrophysical reaction rate of the 14N(p,γ)15O reaction and therefore the astrophysical consequences are not changed by the present results. | |
| 650 | 7 | a NATURVETENSKAPx Fysikx Annan fysik0 (SwePub)103992 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Physical Sciencesx Other Physics Topics0 (SwePub)103992 hsv//eng |
| 653 | a Experimentell fysik | |
| 653 | a Experimental Physics | |
| 700 | 1 | a Halász, Z.u Institute for Nuclear Research (Atomki), Debrecen, Hungary4 aut |
| 700 | 1 | a Kiss, G.Gu Institute for Nuclear Research (Atomki), Debrecen, Hungary4 aut |
| 700 | 1 | a Szücs, T.u Institute for Nuclear Research (Atomki), Debrecen, Hungary4 aut |
| 700 | 1 | a Csík, A.u Institute for Nuclear Research (Atomki), Debrecen, Hungary4 aut |
| 700 | 1 | a Török, Zs.u Institute for Nuclear Research (Atomki), Debrecen, Hungary4 aut |
| 700 | 1 | a Huszánk, R.u Institute for Nuclear Research (Atomki), Debrecen, Hungary4 aut |
| 700 | 1 | a Gilzad Kohan, Mojtabau Luleå tekniska universitet,Materialvetenskap4 aut0 (Swepub:ltu)mojgil |
| 700 | 1 | a Wagner, L.u Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany. Technische Universität Dresden, Dresden, Germany4 aut |
| 700 | 1 | a Fülöp, Zs.u Institute for Nuclear Research (Atomki), Debrecen, Hungary4 aut |
| 710 | 2 | a Institute for Nuclear Research (Atomki), Debrecen, Hungaryb Materialvetenskap4 org |
| 773 | 0 | t Physical Review Cd : American Physical Societyg 100:1q 100:1x 2469-9985x 2469-9993 |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-75596 |
| 856 | 4 8 | u https://doi.org/10.1103/PhysRevC.100.015805 |
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