Atchison, F. Blau, B. Bodek, K. Brandt, B. van den Bryś, T. Daum, M. Fierlinger, P. Geltenbort, P. Hautle, P. Henneck, R. Heule, S. Holley, A. Kasprzak, Malgorzata Kirch, K. Knecht, A. Konter, J. A. Kuźniak, M. Liu, C.-Y. Pichlmaier, A. Plonka, C. Pokotilovski, Y. Saunders, A. Tortorella, D. Wohlmuther, M. Young, A. R. Zejma, J. Zsigmond, G. 2011-06-14 Ultracold neutrons (UCN) have been produced using the cold neutron (CN) beam FUNSPIN at SINQ on cryogenic oxygen (O₂), tetradeuteromethane (C²H₄), and deuterium (²H₂) targets. The target cell (40 mm long, fiducial volume about 45 cm³) was operated between room temperature and 8 K and UCN were produced from gaseous, liquid and solid targets. UCN rates have been measured as a convolution of UCN production and transport out of the target and to the detector. At least within the accessible temperature range of this experiment, deuterium outperforms the other materials. application/pdf https://folia.unifr.ch/global/documents/302073 https://folia.unifr.ch/documents/302073/files/kas_puc.pdf eng info:eu-repo/semantics/altIdentifier/doi/10.1209/0295-5075/95/12001 info:eu-repo/semantics/openAccess License undefined EPL - Europhysics Letters. - 2011, vol. 95, no. 1, p. 12001 info:eu-repo/classification/udc/53 Production of ultracold neutrons from cryogenic ²H₂, O₂, and C²H₄ converters http://purl.org/coar/resource_type/c_6501