000169403 001__ 169403 000169403 005__ 20260225153354.0 000169403 0247_ $$2doi$$a10.1016/j.astropartphys.2010.03.002 000169403 0248_ $$2sideral$$a70847 000169403 037__ $$aART-2010-70847 000169403 041__ $$aeng 000169403 100__ $$0(orcid)0000-0002-6948-5101$$aCebrián, S.$$uUniversidad de Zaragoza 000169403 245__ $$aCosmogenic activation in germanium and copper for rare event searches 000169403 260__ $$c2010 000169403 5203_ $$aExperiments looking for rare events like the direct detection of dark matter particles or the nuclear Double Beta Decay are operated in deep underground locations, to suppress or very effectively reduce the effect of cosmic rays; but cosmogenic activation produced at sea level in detectors and other materials can become a serious hazard for them. Copper and germanium are very frequently used in this kind of experiments requiring an ultra-low radioactive background and therefore have been chosen as activation targets in this work. First, the excitation functions for relevant induced long-lived radioactive isotopes have been estimated; special care has been taken in using those calculations giving the best agreement with measured production cross-sections and in distinguishing production by neutrons or by protons when relevant and possible. Then, the corresponding rates of production of the nuclides in natural and enriched (86% 76Ge and 14% 74Ge) germanium and copper have been evaluated considering two different cosmic ray spectra. Comparison of the obtained activation yields at surface with all the known previous results (based either on calculations or experiments) has allowed to draw conclusions on the general methodology for evaluating cosmogenic activation. 000169403 540__ $$9info:eu-repo/semantics/closedAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/ 000169403 590__ $$a3.808$$b2010 000169403 591__ $$aPHYSICS, PARTICLES & FIELDS$$b8 / 27 = 0.296$$c2010$$dQ2$$eT1 000169403 591__ $$aASTRONOMY & ASTROPHYSICS$$b14 / 55 = 0.255$$c2010$$dQ2$$eT1 000169403 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000169403 700__ $$0(orcid)0000-0002-1770-8940$$aGómez, H.$$uUniversidad de Zaragoza 000169403 700__ $$0(orcid)0000-0002-5352-1884$$aLuzón, G.$$uUniversidad de Zaragoza 000169403 700__ $$aMorales, J. 000169403 700__ $$aTomás, A. 000169403 700__ $$0(orcid)0000-0003-0228-7589$$aVillar, J. A.$$uUniversidad de Zaragoza 000169403 7102_ $$12004$$2X$$aUniversidad de Zaragoza$$bDpto. Física Teórica$$cProy. investigación HCA 000169403 7102_ $$12004$$2390$$aUniversidad de Zaragoza$$bDpto. Física Teórica$$cÁrea Física Atóm.Molec.y Nucl. 000169403 773__ $$g33, 5-6 (2010), 316-329$$pAstropart. phys.$$tAstroparticle Physics$$x0927-6505 000169403 8564_ $$s1834687$$uhttps://zaguan.unizar.es/record/169403/files/texto_completo.pdf$$yVersión publicada 000169403 8564_ $$s2714292$$uhttps://zaguan.unizar.es/record/169403/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000169403 909CO $$ooai:zaguan.unizar.es:169403$$particulos$$pdriver 000169403 951__ $$a2026-02-25-14:58:41 000169403 980__ $$aARTICLE