The Photochemistry of Pyrimidine in Pure H2O Ice Subjected to Different Radiation Environments and the Formation of Uracil

M. Nuevo, Y.-J. Chen, C. K. Materese, W.-J. Hu, J.-M. Qiu, S.-R. Wu, H.-S. Fung, S. A. Sandford, C.-C. Chu, T.-S. Yih, C.-Y. R. Wu, and W.-H. Ip NASA Ames Research Center, Moffett Field, USA SETI Institute, Mountain View, USA Space Sciences Center and Department of Physics and Astronomy, University of Southern California, Los Angeles, USA Department of Physics, National Central University, Zhongli, Taiwan National Synchrotron Radiation Research Center, Hsinchu, Taiwan Graduate Institute of Astronomy, National Central University, Zhongli, Taiwan *e-mail: michel.nuevo-1@nasa.gov