ISSN:
1588-2780
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Energy, Environment Protection, Nuclear Power Engineering
Notes:
Abstract The cyclotron production of21Na, via the20Ne(d, n)21Na and the20Ne(3He, pn)21Na and20Ne(3He, 2n)21Mg →21Na nuclear reactions, has been investigated. Transfer of21Na from the production target to the medical application site some 10 m distant was achieved by gas phase and liquid phase systems, both of which are described. Under optimal conditions 111 MBq·ml−1 (3 mCi·ml−1) of21Na were available at the dispensing reservoir 10 m distant from the production target, when irradiating with a 5 μA deuteron beam current. Incident deuteron energy was degraded to below 3.0 MeV by a 350 μm Al entrance foil, to avoid production of18F. The charge distribution of21Na inside the production target and inside the gas phase transfer tube at distances of 1 m and 15 m were determined, and are reported along with data from similar studies during18F production via the20Ne(d, α)18F reaction.21Na accumulated primarily at the cathode, indicating the production of positively charged species, whereas18F was equally distributed between the electrodes in a production target constructed especially for measuring the charge distribution of the radioactive species.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02037100
