TY - GEN
T1 - Superheavy element nuclear chemistry at RIKEN
AU - Haba, Hiromitsu
AU - Kaji, Daiya
AU - Kasamatsu, Yoshitaka
AU - Kikunaga, Hidetoshi
AU - Komori, Yukiko
AU - Kudou, Yuki
AU - Morimoto, Kouji
AU - Morita, Kosuke
AU - Ooe, Kazuhiro
AU - Ozeki, Kazutaka
AU - Sato, Nozomi
AU - Shinohara, Atsushi
AU - Toyoshima, Atsushi
AU - Yokoyama, Akihiko
AU - Yoneda, Akira
AU - Yoshimura, Takashi
PY - 2010
Y1 - 2010
N2 - A gas-jet transport system has been coupled to the RIKEN gas-filled recoil ion separator GARIS to startup superheavy element (SHE) chemistry at RIKEN. The performance of the system was appraised using an isotope of element 104, 261Rf, produced in the 248Cm(18O,5n) 261Rf reaction. Alpha-particles of 261Rf separated with GARIS and extracted to a chemistry laboratory were successfully identified with a rotating wheel apparatus for α spectrometry. The setting parameters such as the magnetic field of the separator and the gas-jet conditions were optimized. The present results suggest that the GARIS/gas-jet system is a promising approach for exploring new frontiers in SHE chemistry: (i) the background radioactivities of unwanted reaction products are strongly suppressed, (ii) the intense beam is absent in the gas-jet chamber and hence high gas-jet efficiency is achieved, and (iii) the beam-free condition also allows for investigations of new chemical systems.
AB - A gas-jet transport system has been coupled to the RIKEN gas-filled recoil ion separator GARIS to startup superheavy element (SHE) chemistry at RIKEN. The performance of the system was appraised using an isotope of element 104, 261Rf, produced in the 248Cm(18O,5n) 261Rf reaction. Alpha-particles of 261Rf separated with GARIS and extracted to a chemistry laboratory were successfully identified with a rotating wheel apparatus for α spectrometry. The setting parameters such as the magnetic field of the separator and the gas-jet conditions were optimized. The present results suggest that the GARIS/gas-jet system is a promising approach for exploring new frontiers in SHE chemistry: (i) the background radioactivities of unwanted reaction products are strongly suppressed, (ii) the intense beam is absent in the gas-jet chamber and hence high gas-jet efficiency is achieved, and (iii) the beam-free condition also allows for investigations of new chemical systems.
KW - Gas-filled recoil ion separator
KW - Gas-jet transport system
KW - Rf
KW - Superheavy element chemistry
UR - http://www.scopus.com/inward/record.url?scp=77954570291&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77954570291&partnerID=8YFLogxK
U2 - 10.1063/1.3442621
DO - 10.1063/1.3442621
M3 - Conference contribution
AN - SCOPUS:77954570291
SN - 9780735407800
T3 - AIP Conference Proceedings
SP - 356
EP - 362
BT - Nuclear Physics Trends - 7th China-Japan Joint Nuclear Physics Symposium
T2 - 7th Japan-China Joint Nuclear Physics Symposium
Y2 - 9 November 2009 through 13 November 2009
ER -