Positron annihilation in a strong magentic field.

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Strong magnetice field, it means close to the value equal to: B c 3 2 0 13 0 ≡ = 4.414× 10 G e m In that field several <strong>in</strong>terest<strong>in</strong>g phenomena occur: - the electron mas is affected by the strong magnetic field, as B <strong>in</strong>creases first it is gett<strong>in</strong>g slightly lower than m 0 , then slightly higher. -magneic field distorts atoms <strong>in</strong>to long, th<strong>in</strong> cyl<strong>in</strong>ders and molecules <strong>in</strong>to strong, polymer-like cha<strong>in</strong>s. -photons can rapidly split and merge with each other. - vacuume itself is unstable, at extremely large B~10 51 -10 53 G. Duncan, arXiv:astro-ph/0002442v1 (2000) 2/37
Outl<strong>in</strong>e 1. Introduction, 2. Cross section for s<strong>in</strong>gle and two-photon <strong>annihilation</strong> proceses 3. <strong>Positron</strong>ium atom <strong>in</strong> strong magnetic field. 4. Summary 3/37
Page 1: Positron a
Page 5 and 6: Pulsars and magnetars: Magnetic fie
Page 7 and 8: The Dirac equation in</stro
Page 9 and 10: Landau levels The transverse motion
Page 11 and 12: Single photon <str
Page 13 and 14: Differential cross section for s<st
Page 15 and 16: Total cross section for sin
Page 17 and 18: The single photon
Page 19 and 20: Total cross section for two-photon
Page 21 and 22: Differential cross section for two-
Page 27 and 28: Comparison 1e+5 1e+4 E 0 =3m 0 c 2
Page 29 and 30: In „annihilation
Page 31 and 32: The case of small x 0 means the sma
Page 33 and 34: The case of large x 0 . The created
Page 35 and 36: Daugherty and Bussard suggested to
Page 37: Thank you for your attention 37/37

Positron annihilation in a strong magentic field.

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