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Single-Particle Electrodynamics - Assassination Science

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do not contribute to the final equations of motion.<br />

order in ε may, however, contribute to the N F<br />

cross-product with r.) We find<br />

λ(σ·∇)E q 1 = r −2<br />

d<br />

(n d· ˙v)σ + r −2 (n d·σ) ˙v + r −2 ( ˙v·σ)n d<br />

− 3r −2<br />

d<br />

− r −1<br />

d<br />

+ 1 2 r−1 d<br />

− 2r −1<br />

d<br />

d<br />

(n d· ˙v)(n d·σ)n d − 1 2 r−1<br />

d<br />

d<br />

(Odd terms of lower<br />

calculations, through their<br />

˙v 2 σ − 1 2 r−1 d (n d· ˙v) 2 σ<br />

(n d·¨v)σ + 2r −1 ( ˙v·σ) ˙v − r−1 (¨v·σ)n d<br />

d<br />

˙v 2 (n d·σ)n d − rd<br />

−1 (n d· ˙v)(n d·σ) ˙v<br />

(n d· ˙v)( ˙v·σ)n d + 3 2 r−1(n<br />

d· ˙v) 2 (n d·σ)n d<br />

d<br />

+ 2rd<br />

−1 (n d·¨v)(n d·σ)n d + 2 3 ( ˙v·¨v)σ − 7 3 ( ˙v·σ)¨v − 4 (¨v·σ) ˙v<br />

3<br />

d<br />

+ (n d· ˙v)(n d·¨v)σ + 3 2 (n d· ˙v)(¨v·σ)n d + 5 2 (n d·¨v)( ˙v·σ)n d<br />

− 2(n d· ˙v)(n d·¨v)(n d·σ)n d + O(ε),<br />

λ(σ·∇)E q 2 = r −3<br />

d<br />

σ − 3r−3(n<br />

d·σ)n d − r −2 (n d· ˙v)σ − 1 2 r−2(n<br />

d·σ) ˙v<br />

− 3 2 r−2 d<br />

− 3 2 r−3 d<br />

+ r −1<br />

d<br />

− 1 8 r−1 d<br />

+ 9 4 r−1 d<br />

d<br />

d<br />

( ˙v·σ)n d + 3r −2 (n d· ˙v)(n d·σ)n d + 1 2 r−3r<br />

s(n s· ˙v)σ<br />

r s(n d·σ)(n s· ˙v)n d + 1 8 r−1<br />

d<br />

d<br />

d<br />

˙v 2 σ + 3 8 r−1 d (n d· ˙v) 2 σ<br />

(n d·¨v)σ − 5 4 r−1 ( ˙v·σ) ˙v + r−1 (¨v·σ)n d<br />

d<br />

˙v 2 (n d·σ)n d + 3 4 r−1 d (n d· ˙v)(n d·σ) ˙v<br />

(n d· ˙v)( ˙v·σ)n d − 9 8 r−1(n<br />

d· ˙v) 2 (n d·σ)n d<br />

− 2rd<br />

−1 (n d·¨v)(n d·σ)n d + ( ˙v·σ)¨v + 2 (¨v·σ) ˙v<br />

3<br />

d<br />

d<br />

d<br />

− (n d· ˙v)(n d·¨v)σ − 3 2 (n d· ˙v)(¨v·σ)n d − 5 2 (n d·¨v)( ˙v·σ)n d<br />

+ 2(n d· ˙v)(n d·¨v)(n d·σ)n d + O(ε),<br />

515

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