Quasifree-electron bremsstrahlung induced by the projectile field

Journal Article · Thu Jan 01 04:00:00 EST 1981 · Phys. Rev., A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.23.24· OSTI ID:6745763

Yamadera, A; Ishii, K; Sera, K; Sebata, M; Morita, S

Continuum x rays from targets of Be, C, and Al bombarded with 6--40-MeV protons were observed with a Si (Li) detector. In addition to the secondary-electron bremsstrahlung (SEB), the spectra show another component, of which the high-energy limit is given by the relative kinetic energy between the projectile and orbital electrons of the target atom and by the Doppler effect. The component can well be explained in terms of the bremsstrahlung produced by the quasifree scattering of orbital electrons in the field of the projectile. The effect of the binding energy of the orbital electrons on this bremsstrahlung spectrum has been studied. From the comparison of the experimental results with theoretical predictions based on the plane-wave Born approximation and the binary-encounter approximation, the importance of the effect of secondary-electron escape from the target material on the SEB at high-projectile energies was pointed out.

• Research Organization: Cyclotron and Radioisotope Center, Tohoku University, 980 Sendai, Japan
• OSTI ID: 6745763
• Journal Information: Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 23:1; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640301* -- Atomic
Molecular & Chemical Physics-- Beams & their Reactions
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALKALINE EARTH METALS
ALUMINIUM
BEAMS
BERYLLIUM
BREMSSTRAHLUNG
CARBON
CATIONS
CHARGED PARTICLES
COLLISIONS
DATA
ELECTROMAGNETIC RADIATION
ELEMENTS
EMISSION SPECTRA
ENERGY RANGE
EXPERIMENTAL DATA
HYDROGEN IONS
HYDROGEN IONS 1 PLUS
INFORMATION
ION BEAMS
ION COLLISIONS
IONS
METALS
MEV RANGE
MEV RANGE 10-100
NONMETALS
NUMERICAL DATA
RADIATIONS
SPECTRA
X-RAY SPECTRA