TITLE

Development of radioactive ion beam production systems for Tokai Radioactive Ion Acceleration Complex—High temperature ion source for short-lived isotopes

AUTHOR(S)
Otokawa, Y.; Osa, A.; Sato, T. K.; Matsuda, M.; Ichikawa, S.; Jeong, S. C.
PUB. DATE
February 2010
SOURCE
Review of Scientific Instruments;Feb2010, Vol. 81 Issue 2, p02A902
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We have developed a new ion source system in the isotope separator on-line at Japan Atomic Energy Agency, for separation of short-lived isotopes produced by proton-induced fission of 238U. The ion source system is a forced electron beam induced arc discharge version E type ion source with a target container. We successfully operated this system at 2000 °C as a result of reductions in volume of the ion source and the target container, introduction of heating method by electron bombardment, and improvement to the heat shield. This new ion source system was tested using 238U of 640 mg/cm2 with a proton primary beam of 30 MeV, 350 nA. Release times were measured for Kr, In, and Xe. The values of release times are 2.6 s for Kr, 1.8 s for In, and 4.6 s for Xe. In this work, the ion source system enabled us to mass-separate short-lived isotopes such as 93Kr(T1/2=1.286 s), 129In(T1/2=0.61 s), and 141Xe(T1/2=1.73 s) with intensity of 103 ions/s.
ACCESSION #
48352599

 

Related Articles

  • Effusive-flow characterization of arbitrary size and geometry target/vapor transport systems: RIB applications. Bilheux, J.-C.; Alton, G. D.; Liu, Y.; Murray, S. N.; Williams, C. L. // Review of Scientific Instruments;Feb2002, Vol. 73 Issue 2, p786 

    The principal factors that limit intensities of short-lived radioactive ion beams produced by the isotope separator on-line technique are time delays due to diffusion of radioactive species from solid or liquid target materials and their effusive-flow transport to the ion source. Although...

  • Oxide Target Designs for High Primary Beam Intensities for Future Radioactive Ion Beam Facilities. Stora, T.; Bouquerel, E.; Bruno, L.; Catherall, R.; Fernandes, S.; Kasprowicz, P.; Lettry, J.; Marzari, S.; Singh, B. S. Nara; Noah, E.; Penescu, L.; Wilfinger, R. // AIP Conference Proceedings;3/15/2009, Vol. 1099 Issue 1, p764 

    Oxide targets used nowadays in ISOL facilities can only accommodate up to a few kW incoming beam power because of the targets’ moderate operation temperatures and their low thermal conductivities. A generic design to accommodate a 100 kW, 1 GeV proton beam, used as baseline parameters in...

  • Uniform beam profiles of 5 cm convex gridded ion beam source. Koh, S.K.; Song, S.K.; Choi, W.K.; Jung, H.-J.; Gontcharov, L. // Review of Scientific Instruments;Nov95, Vol. 66 Issue 11, p5379 

    Characterizes a Kaufman-type five-centimeter convex gridded ion-beam source in terms of angle-resolved ion-beam current density and beam uniformity at various discharge currents, electromagnet currents, and acceleration potentials. Origin of the technology used in the gridded ion source;...

  • Ion divergence generated by nonuniform current density of intense ion beams. Slutz, S. A. // Physics of Fluids B: Plasma Physics;Aug92, Vol. 4 Issue 8, p2645 

    Large electric and magnetic fields are generated by the space charge and current of intense ion beams. These fields induce ion divergence if the beam current density is not uniform. Within the accelerating region the deflection of ions due to the electric fields is much larger than ion...

  • A combined thermal dissociation and electron impact ionization source for radioactive ion beam... Alton, G.D.; Williams, C. // Review of Scientific Instruments;Apr96, Vol. 67 Issue 4, p1626 

    Describes a combined thermal dissociation and electron impact ionization source for radioactive ion beam (RIB) generation. Dilution of the intensity of the species of interest for RIB; Conception of an ion source that combines molecular dissociation properties of thermal dissociator and high...

  • A high-efficiency positive (negative) surface ionization source for radioactive ion beam. Alton, G.D.; Mills, G.D. // Review of Scientific Instruments;Apr96, Vol. 67 Issue 4, p1630 

    Describes a high efficiency positive (negative) surface ionization source for radioactive beam. Theory of positive ion formation; Theory of negative surface ionization; Electropositive adsorbate-induced work function changes.

  • Fifty centimeter ion beam source[sup a)]. Hayes, A.V.; Kanarov, V.; Vidinsky, B. // Review of Scientific Instruments;Apr96, Vol. 67 Issue 4, p1638 

    Describes a 50 centimeter ion source and its industrial applications. Description of the ion beam processing system; Illustration of the application of the source.

  • Effusive flow delay times for gaseous species in a compact rf ion source[sup a)]. Welton, R.F.; Piotrowski, A.; Alton, G.D.; Murray, S.N. // Review of Scientific Instruments;Apr96, Vol. 67 Issue 4, p1670 

    Discusses radio frequency ion source developed and evaluated as a potential candidate for use in generating radioactive ion beams (RIB). Development of complementary experimental and computation techniques; Characterization of the effusive delay times for the stable counterparts of various...

  • Mini rf-driven ion sources for focused ion beam systems. Jiang, X.; Ji, Q.; Chang, A.; Leung, K. N. // Review of Scientific Instruments;Apr2003, Vol. 74 Issue 4, p2288 

    Mini rf-driven ion sources with 1.2 cm and 1.5 cm inner chamber diameter have been developed at Lawrence Berkeley National Laboratory. Several gas species have been tested including argon, krypton, and hydrogen. These mini ion sources operate in inductively coupled mode and are capable of...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics