Processes involved in electromagnetic acceleration of particles to cosmic-ray energies

✍ Scribed by W.F.G. Swann

• Publisher: Elsevier Science
• Year: 1960
• Tongue: English
• Weight: 419 KB
• Volume: 270
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/0016-0032(60)90838-3

✦ Synopsis

The paper extends ideas, put forward by the writer sonm twenty-five years ago, according to which charged particles could be accelerated to cosmic-ray energies through electromagnetic induction resulting from magnetic fields like those encountered in sunspots.

The paper confines itself, for simplicity, to cases of axial symmetry, and in particuta; to cases where Uo is of the form U0 --1012(ro/r)~F(t), where r is the distance from the axis of symmetry, U0 is the vector potential, which lies in planes perpendicular to that axis, and has no radial or z component. F(t) is a function of time which rises from zero at t = 0 to a peak value of unity, and then decays to zero. The above expression for U0 corresponds to a maximum average magnetic flux of 2000 gauss within the radius r0 which is taken as 109 cm. \v consider protons which start from rest at t = 0.