Results 171 to 180 of about 27,428 (205)

Diagnostics of solar flare hard X-ray sources

Solar Physics, 1978
The dynamics of hard X-ray producing electron beams in solar flares can be strongly affected by the occurrence of a reverse current. The parameter diagram for a beam can be divided into three regimes, one of which is the usual thick target case, the two others being due to two different possible consequences of the reverse current.
Peter Hoyng, Joshua W. Knight, Daniel S. Spicer   +2 more
openaire   +1 more source

Solar flare X-ray burst on September 28,1961

Journal of Geophysical Research, 1962
The bright chromospheric flare of September 28, 1961, emitted a burst of X rays observed by high-altitude balloon-borne detectors. The burst had a small precursor, a very rapid rise, and a three-component decay. The main part of the burst is therefore interpreted as being made up of three separate pulses.
K. A. Anderson, J. R. Winckler
openaire   +1 more source

Solar flare X-ray spectra

Solar Physics, 1979
V. V. Korneev, V. V. Krutov, S. L. Mandelstam, A. M. Urnov, I. A. Zhitnik, E. Ya. Golts, E. Ya. Kononov, Y. V. Sidelnikov   +7 more
openaire   +2 more sources

On the origin of solar flare X-rays

Solar Physics, 1971
The origin of X-ray solar bursts is investigated on the basis of the theoretical model developed by Syrovatskii. According to this model (i) one of the most important manifestations of flares is the acceleration of charged particles (mainly of electrons) to subrelativistic and relativistic energies, and (ii) the two flare phases: stationary (soft) and ...
openaire   +1 more source

Solar flare X-ray spectra

Solar Physics, 1980
V. V. Korneev, V. V. Krutov, S. L. Mandelstam, B. Sylwester, I. P. Tindo, A. M. Urnov, B. Valníček, I. A. Zhitnik   +7 more
openaire   +1 more source

Polarization of hard X-rays from solar flares

Solar Physics, 1972
The polarization of hard solar X-radiation (> 10 keV) is calculated on the assumption that electrons get a non-isotropic velocity distribution in the initial phase of a flare. The brems-strahlung generated by nonthermal electrons spiralling around magnetic field lines with discrete pitch angles is considerably polarized if observed at approximately ...
openaire   +1 more source

Molecular engineering of contact interfaces for high-performance perovskite solar cells

Nature Reviews Materials, 2022
Furkan H Isikgor, Shingis Zhumagali, Iain McCulloch   +2 more
exaly  

Stability challenges for the commercialization of perovskite–silicon tandem solar cells

Nature Reviews Materials, 2023
Leiping Duan, Kylie R Catchpole
exaly  

Spectra of solar x-ray flares

Soviet Physics Uspekhi, 1979
I.A. Zhitnik, É.Ya. Kononov, V.V. Korneev, V.V. Krutov, S.L. Mandel'shtam, A.M. Urnov   +5 more
openaire   +1 more source

Advantages, challenges and molecular design of different material types used in organic solar cells

Nature Reviews Materials, 2023
Jicheng Yi, Guangye Zhang, Han Yu
exaly