Recoil separator ERNA: charge state distribution, target density, beam heating, and longitudinal acceptance

• Published in: Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Vol. 531; no. 3; pp. 428 - 434
• Main Authors: Schürmann, D., Strieder, F., Di Leva, A., Gialanella, L., De Cesare, N., D'Onofrio, A., Imbriani, G., Klug, J., Lubritto, C., Ordine, A., Roca, V., Röcken, H., Rolfs, C., Rogalla, D., Romano, M., Schümann, F., Terrasi, F., Trautvetter, H.P.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.10.2004
• Subjects: Recoil separator; Recoil separator
• ISSN: 0168-9002; 1872-9576
• DOI: 10.1016/j.nima.2004.05.131

For improved cross section measurements of the reaction 12 C ( α , γ ) 16 O in inverted kinematics, a recoil separator ERNA is developed at the 4 MV Dynamitron tandem accelerator in Bochum to detect directly the 16O recoils with high efficiency. The 16O recoils are produced by the 12C projectiles in a windowless 4He gas target. We report on the charge state distribution of the 16O recoils, the gas target density, the beam heating of the gas target, and the acceptance of the separator along the extended gas target.