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Varga, L.; Wilsenach, H.; Hall, O.; Dickel, T.; Reiter, M.P.; Amanbayev, D.; Davinson, T.; Morrissey, D.J.; Pohjalainen, I.; Tortorelli, N.; Yu, J.; Zhao, J.; Ayet, S.; Beck, S.; Bergmann, J.; Ge, Z.; Geissel, H.; Heitz, L.; Hornung, C.; Kalantar-Nayestanaki, N.; Khan, E.; Kripko-Koncz, G.; Mardor, I.; Narang, M.; Plass, W.; Scheidenberger, C.; Simonov, M.; Singh, S.K.; State, A.; Theisen, C.; Vandebrouck, M.; Woods, P.J.
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 06/2024, Letnik: 1063Journal Article
A novel system has been developed to detect simultaneous double-alpha emission from purified and weightless sources. The system includes the collection of 224Ra low-energy recoils in purified helium buffer gas from the decay of 228Th. The recoil products are thermalized and collected in a cryogenic buffer gas cell and extracted into an RF-ion guide for mass selection. The mass-separated ions are implanted at low kinetic energy into a thin carbon foil placed between two large-area double-sided silicon strip detectors to observe correlated alpha-particle emission. The apparatus is described in detail, including insights into its experimental performance.
