Inicio  /  Instruments  /  Vol: 3 Par: 1 (2019)  /  Artículo
ARTÍCULO
TITULO

Boron Nitride Nanotube Cyclotron Targets for Recoil Escape Production of Carbon-11

Johanna Peeples    
Sang-Hyon Chu    
James P. O?Neil    
Mustafa Janabi    
Bruce Wieland and Matthew Stokely    

Resumen

Boron nitride nanotubes (BNNTs) were investigated as a target media for cyclotron production of 11C for incident beam energy at or below 11 MeV. Both the 11B(p,n)11C and 14N(p,a)11C nuclear reactions were utilized. A sweep gas of nitrogen or helium was used to collect recoil escape atoms with a desired form of 11CO2. Three prototype targets were tested using an RDS-111 cyclotron. Target geometry and density were shown to impact the saturation yield of 11C and percent of yield recovered as carbon dioxide. Physical damage to the BNNT target media was observed at beam currents above 5 µA. Additional studies are needed to identify operating conditions suitable for commercial application of the method.

 Artículos similares

       
 
Sijiao Wang, Kaiming Cao, Guanwei Wang, Mengmeng Chen and Hongxi Wang    
Epoxy resin is one of the most widely used thermosetting polymers and commonly applied in power electronics field. The intrinsic properties of epoxy can be improved by the introduction of inorganic filler, thus fabricating a composite material. In this p... ver más
Revista: Applied Sciences

 
Mina Dadvand and Oumarou Savadogo    
Crack-free and uniform nickel?tungsten (NiW) coatings and their composite coatings filled with ceramic particles such as silicon carbide (SiC) and hexagonal-boron nitride (hBN) were deposited on brass substrates by applying direct current (DC) waveforms.... ver más
Revista: Coatings

 
Chil Hyoung Lee, Go Bong Choi, Eun Mi Kim, Jongho Lee, Jaegeun Lee, Hi Gyu Moon, Myung Jong Kim, Yoong Ahm Kim and Tae Hoon Seo    
The demand for high-performance two-dimensional gas barrier materials is increasing owing to their potential for application in optoelectronic devices. These materials can help the devices maintain their properties over a long period. Therefore, in this ... ver más
Revista: Applied Sciences

 
Yang Gao, Xiaoqiang Ren, Jiang Han, Fuwei Wang, Yuan Liang and Lin Liu    
The microtopography of a honing wheel surface composed of active abrasive grains is the key factor affecting the honing characteristics, and control of it is a sufficient condition to realize high-efficiency precision honing. Based on the magnetron sputt... ver más
Revista: Coatings

 
Giacomo Riccucci, Lorenzo Pezzana, Simone Lantean, Alice Tori, Silvia Spriano and Marco Sangermano    
Thermal conductivity is a key property in many applications from electronic to informatics. The interaction of fillers with Sylgard 184 was studied; this study explores new composites and the influence of metal particles (copper and nickel), carbon-based... ver más
Revista: Applied Sciences