Analysis of the charge state distribution produced in a 78Kr + 98Mo fusion evaporation reaction utilizing the MARA separator
Experimental results on the charge state distribution of the fusion evaporation reaction 78Kr + 98Mo are presented. The data has been taken from the 1st commissioning run of MARA (Mass Analysing Recoil Apparatus). Data from the charge states of q = 29 − 33 were collected. Here, q represents the elementary charge describing the number of electrons removed from a neutral atom. Results show an expected gaussian distribution around the most probable charge, ̄q. A most probable charge state of ̄q = (27.99 ± 0.20) was obtained after fitting the data. The value of ̄q was lower than initially anticipated, which was mainly a result of a less than desired beam energy delivered on the day of testing.
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Towards saturation of the electron-capture delayed fission probability : The new isotopes 240Es and 236Bk
Konki, Joonas; Khuyagbaatar, J.; Uusitalo, Juha; Greenlees, Paul; Auranen, Kalle; Badran, Hussam; Block, M.; Briselet, R.; Cox, D. M.; Dasgupta, M.; Nitto, A. Di; Düllman, Ch. E.; Grahn, Tuomas; Hauschild, K.; Herzan, Andrej; Herzberg, R.-D.; Heßberger, F. P.; Hinde, D. J.; Julin, Rauno; Juutinen, Sakari; Jäger, E.; Kindler, B.; Krier, J.; Leino, Matti; Lommel, B.; Lopez-Martens, A.; Luong, D. H.; Mallaburn, M.; Nishio, K.; Pakarinen, Janne; Papadakis, Philippos; Partanen, Jari; Peura, Pauli; Rahkila, Panu; Ruotsalainen, Panu; Sandzelius, Mikael; Sarén, Jan; Scholey, Catherine; Sorri, Juha; Stolze, Sanna; Sulignano, B.; Theisen, Ch.; Ward, A.; Yakushev, A.; Yakusheva, V. (Elsevier BV * North-Holland, 2017)The new neutron-deficient nuclei 240Es and 236Bk were synthesised at the gas-filled recoil separator RITU. They were identified by their radioactive decay chains starting from 240Es produced in the fusion–evaporation ... -
Octupole correlations in the N = Z + 2 = 56 110Xe nucleus
Illana, A.; Pérez-Vidal, R.M.; Stramaccioni, D.; Valiente-Dobón, J.J.; Rodriguez, T.R.; Robledo, L.M.; Poves, A.; Auranen, K.; Beliuskina, O.; Delafosse, C.; Eronen, T.; Ge, Z.; Geldhof, S.; Gins, W.; Grahn, T.; Greenlees, P.T.; Joukainen, H.; Julin, R.; Jutila, H.; Kankainen, A.; Leino, M.; Louko, J.; Luoma, M.; Nesterenko, D.; Ojala, J.; Pakarinen, J.; Rahkila, P.; Ruotsalainen, P.; Sandzelius, M.; Sarén, J.; Uusitalo, J.; Zimba, G.L. (Elsevier, 2024)This letter reports on the first observation of an octupole band in the neutron-deficient (N = Z + 2) nucleus 110Xe. The 110Xe nuclei were produced via the 54Fe(58Ni,2n) fusion-evaporation reaction. The emitted γ rays were ... -
In-flight recoil separators RITU and MARA and the standard detector setups
Sarén, Jan; Uusitalo, Juha; Joukainen, Henna (Elsevier BV, 2023)In-flight recoil separators RITU and MARA at Jyväskylä Accelerator Laboratory are complementary devices to separate the fusion-evaporation residues from the primary beam and other reaction products. The nuclear-structure-research ... -
Offline commissioning of the multi-reflection time-of-flight mass separator at JYFLTRAP
Virtanen, Ville (2019)Tässä työssä esitellään Jyväskylän yliopiston kiihdytinlaboratoriossa sijaitsevaan IGISOL-laitokseen rakennetun moniheijastavan lentoaika-massaerottajan (engl. Multi- Reflection Time-of-Flight mass separator, MR-ToF-ms) ... -
Comment on 'Analysis of decay chains of superheavy nuclei produced in the 249Bk + 48Ca and 243Am + 48Ca reactions'
Forsberg, Ulla; Leino, Matti (IOP, 2019)Zlokazov and Utyonkov (2017 J. Phys. G: Nucl. Part. Phys. 44 075107) question the validity of the methods and conclusions presented by Forsberg et al (2016 Nucl. Phys. A 953 117). In this comment, we argue that the criticism ...
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