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1 - IAEA Nuclear Data Services

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as<br />

26<br />

»<br />

XL<br />

20<br />

IB<br />

«<br />

*<br />

12<br />

j&[mbarn]<br />

— ? —<br />

10<br />

Pfa<br />

1,3mcV<br />

- 57<br />

—i—<br />

Si<br />

0,5 meV<br />

temperature<br />

Fig. 1 Scattering cross section as a function of sample<br />

temperature.<br />

Scattering angle: 60 - 120 . The solid curve is<br />

calculated using a single phonon energy corresponding<br />

to 53°K for Pb and 105°K for Bi.

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