Anomalous behavior in the performance of Van de Graaff accelerators

Journal Article · · Applied Physics Communications; (USA)

OSTI ID:7107412

Arafah, D E; Al-Ramadin, Y; Boulus, R; Mahmoud, A ^[1]

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1. Univ. of Jordan, Amman (Jordan)

Rutherford Backscattering Spectrometry (RBS) technique has been used to investigate anomalies during the performance of the University of Jordan Van de Graaff accelerator (JOVAC). For ion sources of atomic numbers, Z {>=} 2, different well defined beams with the same terminal voltage and of varying intensity were observed at the output of the switching magnet that is used to steer the beam into one of a number of beam lines, while maintaining a fixed bending magnetic field of the analyzing magnet. Specifically, two ion sources were examined, Helium and Neon. For Helium, two beams were detected while for Neon, seven beams were observed. The RBS experiments for Helium yielded identical energy spectra for the two observed beams while the case of Neon is more complex. Different RBS spectra were obtained, and more investigations are needed to determine the nature of the multiple beams. Various causes that may form the multiple beams are discussed. Such observed beams are consistent with the belief that multiple charge states are formed as the energy analyzed beam travels to the switching magnet. Their formation is due to charge exchange processes that take place through the interaction of the beam with carbon deposits on the stabilizing slit system.

• OSTI ID: 7107412
• Journal Information: Applied Physics Communications; (USA), Vol. 9:1-2; ISSN 0277-9374
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
VAN DE GRAAFF ACCELERATORS
PERFORMANCE
DATA ANALYSIS
EXPERIMENTAL DATA
JORDAN
MEASURING INSTRUMENTS
MEASURING METHODS
SPECTROSCOPY
ACCELERATORS
ASIA
DATA
DEVELOPING COUNTRIES
ELECTROSTATIC ACCELERATORS
INFORMATION
NUMERICAL DATA
430000* - Particle Accelerators
430301 - Particle Accelerators- Ion Sources