Neutron activation cross sections for zirconium isotopes

New experimental cross sections are presented for ⁹⁰Zr(n,α)^87mSr, ⁹⁰Zr(n,x)^89mY, ⁹⁰Zr(n,p)^90mY, ⁹⁰Zr(n,2n)⁸⁹Zr, ⁹⁰Zr(n,2n)^89mZr, ⁹¹Zr(n,nα)^87mSr, ⁹¹Zr(n,x)^90mY, ⁹¹Zr(n,p)^91mY, ⁹²Zr(n,x)^91mY, ⁹²Zr(n,p)⁹²Y, ⁹⁴Zr(n,alpha)⁹¹Sr, ⁹⁴Zr(n,x)⁹³Y and ⁹⁴Zr(n,p)⁹⁴Y reactions. These have been obtained with the activation technique using gamma-ray spectrometry and irradiations at the IRMM Van de Graaff laboratory. The new data were obtained in the energy range from 14 to 21 MeV. In nearly all cases this work provides the first data above 15 MeV and for the ⁹²Zr(n,x)^91mY and ⁹¹Zr(n,nalpha)^87mSr reactions no earlier data were reported. The experimental results are compared with model calculations using the TALYS code to obtain a first indication of the impact of the new data on modeling of n +Zr reactions.