One of the major considerations in planning photoproduction experiments is the choice of technique for generating the photon beam. Several possibilities exist, chieey Compton-backscattered laser beams, tagged and untagged bremsstrahlung, and coherent bremsstrahlung from a crystal. In a coherent bremsstrahlung beam, collimation can be used to suppress the incoherent component and to narrow the e...

Introduction The Advanced Photon Source (APS), as well as other third-generation synchrotron light sources, uses permanent magnets in the insertion devices to produce x-rays for scientific research [1,2]. When placed in a high-energy storage ring, these permanent magnets are subjected to irradiation from synchrotron radiation, high-energy bremsstrahlung, and bremsstrahlung-produced photoneutron...

The spectral properties of a hybrid steady thermal-nonthermal isotropic plasma are studied. The involved emission mechanisms are thermal bremsstrahlung, nonthermal bremsstrahlung, cyclotron and nonthermal synchrotron. Formulas are derived to calculate the emissivities and absorption coefficients of all these processes. Calculations show that the nonthermal synchrotron and the thermal bremsstrah...

Visible and near-infrared electron–ion bremsstrahlung measurements in fusion research devices, used to determine the effective ionic charge (Zeff), are often plagued by pollutant emission from the cool-edge region. The primary sources of visible and near-infrared non-bremsstrahlung continuum emission in the Madison Symmetric Torus arise from electron–neutral interactions, and the pollutant emis...

Radio emission of the quiet Sun is considered to be due thermal bremsstrahlung hot solar atmosphere. The properties in microwave band have been well studied, and they can described by spectrum emission. In meter-wave decameter-wave bands, rarely studied instrumental limitations. this work, we use LOw Frequency ARray (LOFAR) telescope perform high quality interferometric imaging spectroscopy obs...

Diiuse galactic continuum-ray emission in the 0.75-30 MeV range from the inner Galaxy has been studied using data from COMPTEL on the Compton Observatory. Observations of the inner Galaxy from the Sky Survey have been used. The imaging properties of COMPTEL enable spatial analysis of the-ray distribution using model tting. A model based on atomic and molecular gas distributions in the Galaxy ha...

Copious x-ray production is shown to attend the collisions of suprathermal (?MeV) protons with ambient electrons,via a process of inverse bremsstrahlung. Such suprathermal protons have been detected in cosmic rays and in solar f lare events; the inverse bremsstrahlung of such cosmic ray protons is expected to make a significant contribution to the diffuse sky background of x-rays and supratherm...

Diiuse Galactic continuum-ray emission in the 0.75-30 MeV range from the whole sky has been studied using COMPTEL data from the rst 3 years of of the Compton Observatory. The imaging properties of COMPTEL enable spatial analysis of the-ray distribution using model tting. A model based on gas and inverse-Compton distributions in the Galaxy has been used to derive the intensity spectrum of the-ra...