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RPC IES Conversions

RPC IES Conversions. May 29, 2013 T. Cravens. May 2013 RPC IES conversions. Counts/s ≈ Flux (s sr eV cm 2 ) -1 x G x E G DW D A (  E/E)= 3 x 10 −5 cm 2 sr eV/(eV counts/electron) (one “ pixel ” ) d f/ dEd W = (1/ m)v 2 f = (2/m 2 )f E all SI units. Distri. Func f.

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RPC IES Conversions

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  1. RPC IES Conversions • May 29, 2013 T. Cravens

  2. May 2013RPC IES conversions • Counts/s ≈ Flux (s sr eV cm2)-1 x G x E • GDW DA (E/E)= • 3 x 10−5 cm2 sr eV/(eV counts/electron) • (one “pixel”) • df/ dEdW = (1/m)v2 f = (2/m2)f E all SI units. Distri. Func f. • f = (1/2)( me/e)2 (1/E)104 df/ dEdW cgs for flux and eV for E • Use E = 0.04 E

  3. Conversions Contd. • RPC IES asteroid SW • Density from this is (with a rough integration and isotropy): 3 cm-3. • At 2.7 AU. Expect 1 - 3 cm-3.

  4. More Conversions (SW) • Second moment - temperature. • (isotropy, zero drift adopted) • Find kT = 9.1 eV which looks good!

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