6533b7d8fe1ef96bd126afe6
RESEARCH PRODUCT
Spectral distribution and Coulomb correction for nuclear bremsstrahlung induced by heavy targets
Ulrik I. UggerhøjMarcos Nogueira MartinsA. MangiarottiA.a. MalafronteC. F. NielsenP. KlagWerner LauthD.h. Jakubassa-amundsensubject
PhysicsQuantum electrodynamicsNuclear and High Energy PhysicsSpectral power distributionMECÂNICA QUÂNTICAHigher-order theory010308 nuclear & particles physicsBremsstrahlungBremsstrahlungIntensity ratio01 natural sciencesSpectral linelcsh:QC1-999Nuclear physicsDistortion0103 physical sciencesCoulombRadiative transfer010306 general physicsQuantumlcsh:PhysicsCoulomb correctionPhoton spectradescription
Abstract Bremsstrahlung spectra below 250 MeV have been measured colliding 500 MeV–electrons with Cu, Ag, and Au targets. The experimental intensity ratios relative to Cu are well described by an accurate analytical high-energy theory, which accounts both for Coulomb distortion and screening. This represents the first experimental verification of the discovery by Bethe-Maximon that leading-order quantum mechanical calculations, equivalent to quasiclassical approximations, become exact at high energies and small angles. It also shows that radiative QED effects play a minor role in the covered part of the spectral distribution within the accuracy (1.6%) of the present measurements.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-04-01 |