Electron-Electron Bremsstrahlung from a Quantum Plasma (Z=1)

Electron-Electron Bremsstrahlung in a Hot Plasma

“…At a given temperature r the ratio y""(K[T) increases considerably towards the high-energy part of the bremsstrahlung spectrum 12 , that is, the contribution of e-e bremsstrahlung is greatest in the short-wavelength region. For k\>, T = 10 keV the e-e emission exceeds 10% of the e-p emission al photon energies above 40 keV.…”

“…where oi = e 2 /hc^ 1/137 is the fine-structure constant, r0 = e 2 /m c 2 is the classical radius of the electron, and the function F has the form This formula has been derived by Maxon and Corman 12 . The integral l (2.11)…”

Primordial Black Holes from Long-Range Scalar Forces and Scalar Radiative Cooling

“…Third, there is scalar bremsstrahlung radiation similar to free-free emission of photons from plasma [59,60]. Unlike the usual plasma with two charges of particles, our system has identical particles, so the leading bremsstrahlung radiation in two-particle collisions is quadrupole, not dipole, and it is similar to e − e component of the free-free emission from plasma [59,60].…”

Analytic fitting formulae for relativistic electron-electron thermal bremsstrahlung

“…To ensure that the present paper is self-contained, we recall the expressions in these approximations. The photon production rate and the emissivity in the non-relativistic (NR) approximation (Maxon & Corman 1967;Maxon 1972;Itoh et al 2002a) are given by…”

“…In particular, Haug (1975a) and Haug (1975b) carried out a relativistic calculation of the electron-electron thermal bremsstrahlung emissivity and found that the non-relativistic electron-electron thermal bremsstrahlung emissivity calculated Maxon & Corman (1967) and Maxon (1972) agree with the relativistic results to within about 1% accuracy at T ∼ 1.5 × 10 8 K. Itoh et al (2002a) calculated the precision analytic fitting formula for the non-relativistic electron-electron thermal bremsstrahlung Gaunt factor, which has an overall accuracy of higher than 1% for the temperature range 6.0 ≤ log T [K] ≤ 8.5.…”