Energy loss of fast clusters through matter

Journal Article · Mon Dec 01 00:00:00 EST 1997 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.56.4786· OSTI ID:553070

Ben-Hamu, D; Baer, A; Feldman, H; Levin, J; Heber, O; Amitay, Z; Vager, Z; Zajfman, D ^[1]

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1. Department of Particle Physics, Weizmann Institute of Science, Rehovot 76100 (Israel)

Energy loss in the MeV range of simple clusters impinging on thin carbon targets has been measured using a time-of-flight method. Stopping-power ratios defined as the ratio of the stopping power of the cluster to the sum of the stopping powers of the constituent atoms moving at the same velocity were investigated. Stopping- power ratios close to unity were observed for O{sub 2} and B{sub 3} clusters, while deenhancement effect is observed in the stopping-power ratios of C{sub 3} and C{sub 4}. The experimental results are compared both with an existing theoretical model, which takes into account the spatial correlation of the fragments, and with a simple united-atom model, which also includes the charge state evolution of the fragment ions inside the target. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 553070
• Journal Information: Physical Review A, Vol. 56, Issue 6; Other Information: PBD: Dec 1997
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BORON
ENERGY LOSSES
OXYGEN
CARBON
STOPPING POWER
ATOM COLLISIONS
MOLECULAR CLUSTERS
ATOMIC CLUSTERS
MEV RANGE