講師：Thierry Stora 博士
スイス／欧州原子核研究機構（CERN）
ISOLDEターゲット及びイオン源開発チーム チームリーダー
Title： “New radioactive ion beams at CERN-ISOLDE : Target and ion source
developments”
日時: 2011年 12月2日（金） 10:30 -
場所: RIBF棟2F 大会議室
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Abstract：
ISOLDE at CERN produces a wide range of radioactive ion beams by the
isotope separation online (ISOL) method. It has been in operation for more
than forty years, is today the ISOL facility which offers the widest range
of radioactive ion beams. This is the result of constant developments in the
techniques used in beam production, that span different scientific
disciplines such as material science, gas phase chemistry or plasma physics.
I will introduce in this seminar the latest developments that lead to
the delivery of new beams, to gains in beam intensities or in purity. For
instance, we have witnessed the first use of nanostructured and submicron
target materials for the production of intense exotic Mg and Kr beams, and
the first direct production of Fe beams. Selective impurity adsorption was
achieved thanks to the use of quartz trapping insert in the transfer line
between the target and the ion source, for the production of 80Zn and 130Cd
beams. Advances in the understanding and development of forced electron beam
impact ion sources finally lead to significant increases in their
performance, with a new generation of ion sources "VADIS", notably applied
when 229Rn was discovered by the ISOLTRAP collaboration.
A final part of the presentation will cover the developments of high
power ISOL targets, useful for the next generation pan-European radioactive
ion beam facility EURISOL, and for the large scale neutrino oscillation
facility betabeams.
担当：装置開発チーム 大西（内線:4774）