| 摘要 |
<p>An apparatus for producing scattering signatures from a coin (105) comprises a platform (107) configured to hold the coin (105) and an electromagnetic radiation source (103) configured to produce a beam directed toward a portion of at least one surface of the coin (105). The electromagnetic radiation source (103) is arranged to produce a far-field scattering signature upon interaction the at least one surface of the coin (105). A plurality of collection elements (R3) is configured to produce an electrical signal based upon collecting at least a portion of the far- field scattering signature.</p> |
