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7.1 Table 1


 
  $d^3\!\sigma$ $d^2\!\sigma$
  small q large q  
Bethe-Heitlera 2 - 4 0.25 0.5 - 0.9
Elwert-Bethe-Heitler 2 - 6 0.3 - 0.5 0.7 - 1.1
Elwert-Haug 1.1 - 1.2 0.3 - 0.5 0.5 - 0.9

Ratio of results of approximate theories to exact partial wave theory for $Z \ge 47$, E1 = 50 keV to E1 = 450 keV, with k/T1 = 0.4to k/T1 = 0.85. Underlined numbers represent dominant cases.

aThese results do not apply in the tip region, where the Bethe-Heitler theory is known to severely underestimate more exact calculations.



Eoin Carney
1999-06-14