| 摘要 |
An x-ray emission device comprises a housing configured to maintain a low fluid environment, the housing having a first wall with a window substantially transparent to x-rays and a second wall having a portion comprising an exterior surface comprising an electrically insulating material, an electron target within the housing, and a contact material for frictionally contacting the electrically insulating material, the contact material comprising a material such that frictional contact with the electrically insulating material generates a charge imbalance. |
