{"id":3111,"date":"2022-02-03T08:00:18","date_gmt":"2022-02-03T08:00:18","guid":{"rendered":"https:\/\/tandetron.atomki.hu\/2022\/02\/03\/activation-cross-section-measurement-of-the-14np%ce%b315o-astrophysical-key-reaction\/"},"modified":"2023-04-06T11:42:10","modified_gmt":"2023-04-06T11:42:10","slug":"activation-cross-section-measurement-of-the-14np%ce%b315o-astrophysical-key-reaction","status":"publish","type":"post","link":"https:\/\/tandetron.atomki.hu\/en\/2022\/02\/03\/activation-cross-section-measurement-of-the-14np%ce%b315o-astrophysical-key-reaction\/","title":{"rendered":"Activation cross section measurement of the 14<\/sup>N(p,\u03b3)15<\/sup>O astrophysical key reaction"},"content":{"rendered":"

[vc_row][vc_column][vc_custom_heading source=”post_title” font_container=”tag:h3|text_align:left” use_theme_fonts=”yes”][vc_text_separator title=”PERIODICAL PUBLICATIONS” title_align=”separator_align_left” color=”custom” style=”dotted” border_width=”2″ css_animation=”right-to-left” accent_color=”#ffac03″][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text]Gy. Gy\u00fcrky, Z. Hal\u00e1sz, G.G. Kiss, T. Sz\u00fccs, Zs. F\u00fcl\u00f6p: <\/strong><\/span>
\nActivation cross section measurement of the 14<\/sup>N(p,\u03b3)15<\/sup>O astrophysical key reaction
\n<\/i>Physical Review C 105 (2022) L022801<\/strong><\/span><\/p>\n

DOI: https:\/\/doi.org\/10.1103\/PhysRevC.105.L022801<\/a><\/strong><\/span><\/p>\n

Published:<\/span><\/strong> 3 February 2022[\/vc_column_text][vc_column_text]Abstract<\/strong><\/span><\/p>\n

Background:<\/span> 14<\/sup><\/span><\/span><\/span>N<\/span><\/span><\/span>(<\/span><\/span>p<\/span><\/span>,<\/span><\/span>\u03b3<\/span><\/span>)15<\/sup><\/span><\/span><\/span><\/span><\/span><\/span>O<\/span><\/span><\/span><\/span><\/span><\/span><\/span> is one of the key reactions of nuclear astrophysics, playing a role in various stellar processes and influencing energy generation of stars, stellar evolution, and nucleosynthesis. For a reliable reaction rate calculation, the low-energy cross section of 14<\/sup><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>N<\/span><\/span><\/span>(<\/span><\/span>p<\/span><\/span>,<\/span><\/span>\u03b3<\/span><\/span>)15<\/sup><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>O<\/span><\/span><\/span><\/span><\/span><\/span><\/span>must be known with high accuracy. Owing to the unmeasurable low cross sections, theoretical calculations are unavoidable.<\/p>\n

Purpose:<\/span><\/span> High-precision experimental cross section data are needed in a wide energy range in order to provide the necessary basis for low-energy extrapolations. In the present work, the total 14<\/sup><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>N<\/span><\/span><\/span>(<\/span><\/span>p<\/span><\/span>,<\/span><\/span>\u03b3<\/span><\/span>)15<\/sup><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>O<\/span><\/span><\/span><\/span><\/span><\/span><\/span> cross section\u00a0was measured with a method complementary to the available data sets.<\/p>\n

Method:<\/span><\/span> The cross section\u00a0was measured with activation, based on the detection of the annihilation radiation following the \u03b2<\/span><\/span><\/span>+<\/span><\/span><\/span><\/span><\/span><\/span><\/span> decay of the reaction product 15<\/sup><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>O<\/span><\/span><\/span><\/span><\/span><\/span>. This method, which provides directly the astrophysically important total cross section, was never used for the 14<\/sup><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>N<\/span><\/span><\/span>(<\/span><\/span>p<\/span><\/span>,<\/span><\/span>\u03b3<\/span><\/span>)15<\/sup><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>O<\/span><\/span><\/span><\/span><\/span><\/span><\/span> cross section\u00a0measurement in the studied energy range.<\/p>\n

Results:<\/span><\/span> The nonresonant cross section\u00a0was measured between 550 and 1400\u00a0keV center-of-mass energies with total uncertainty of about 10%. The results were compared with literature data using an R<\/span><\/span><\/span><\/span><\/span>-matrix analysis. It is found that the cross sections\u00a0measured in this work are in acceptable agreement with the two recent measurements only if the weak transitions\u2014not measured in those works\u2014are included.<\/p>\n

Conclusions:<\/span><\/span> The present data set, being largely independent from the other available data, can be used to constrain the extrapolated cross sections\u00a0to astrophysical energies and helps to make the astrophysical model calculations more reliable.[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_btn title=”Back to PERIODICAL PUBLICATIONS page” style=”outline-custom” outline_custom_color=”#000000″ outline_custom_hover_background=”#ffac03″ outline_custom_hover_text=”#ffffff” shape=”round” size=”sm” i_icon_fontawesome=”fas fa-arrow-left” add_icon=”true” link=”url:https%3A%2F%2Ftandetron.atomki.hu%2Fen%2Fr-d%2Fpublications%2Fperiodical-publications%2F|title:Foly%C3%B3irat%20publik%C3%A1ci%C3%B3″][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

[vc_row][vc_column][vc_custom_heading source=”post_title” font_container=”tag:h3|text_align:left” use_theme_fonts=”yes”][vc_text_separator title=”PERIODICAL PUBLICATIONS” title_align=”separator_align_left” color=”custom” style=”dotted” border_width=”2″ css_animation=”right-to-left” accent_color=”#ffac03″][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text]Gy. Gy\u00fcrky, Z. Hal\u00e1sz, G.G. Kiss, T. Sz\u00fccs, Zs. F\u00fcl\u00f6p: Activation cross section measurement of [\u2026]<\/span><\/p>\n","protected":false},"author":1,"featured_media":2214,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"jetpack_post_was_ever_published":false,"footnotes":""},"categories":[2,47],"tags":[],"class_list":["post-3111","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ginop","category-periodical-publication"],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/tandetron.atomki.hu\/wp-content\/uploads\/sites\/3\/2020\/06\/tandetron-periodical-publication-ikon.png?fit=1024%2C768&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/paFlKz-Ob","_links":{"self":[{"href":"https:\/\/tandetron.atomki.hu\/en\/wp-json\/wp\/v2\/posts\/3111","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tandetron.atomki.hu\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tandetron.atomki.hu\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tandetron.atomki.hu\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tandetron.atomki.hu\/en\/wp-json\/wp\/v2\/comments?post=3111"}],"version-history":[{"count":3,"href":"https:\/\/tandetron.atomki.hu\/en\/wp-json\/wp\/v2\/posts\/3111\/revisions"}],"predecessor-version":[{"id":3114,"href":"https:\/\/tandetron.atomki.hu\/en\/wp-json\/wp\/v2\/posts\/3111\/revisions\/3114"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tandetron.atomki.hu\/en\/wp-json\/wp\/v2\/media\/2214"}],"wp:attachment":[{"href":"https:\/\/tandetron.atomki.hu\/en\/wp-json\/wp\/v2\/media?parent=3111"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tandetron.atomki.hu\/en\/wp-json\/wp\/v2\/categories?post=3111"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tandetron.atomki.hu\/en\/wp-json\/wp\/v2\/tags?post=3111"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}