电子辐射对渗透和非渗透性客体上指纹信息记录的影响

The Effect of Electron Irradiation for Fingerprint Information Recording on Porous and Non-porous

由于恐怖分子利用邮政系统投寄携带炭疽病毒的邮件,传播病毒,已引起美国政府在邮政系统,选择地利用电子辐射杀死病毒。然而,这种病毒袭击并没有得到有效控制,却使信封内的邮件由于高温辐射,受到损坏。有报道说,由于电子辐射使纸张、珠宝、信用卡、软盘和光盘及其它电子材料受到损害。某些研究已在法庭科学中得到验证。本文介绍辐射过程在渗透和非渗透性客体上,对化学试剂、生物酶记录指纹信息的影响。

Useing postal system as a means of delivering anthrax spores via contaminated envelopes has led to the selective irradiation of mail. These as yet unsolved attacks and the U. S. postal Service＇s decision to irradiate certain types of mail has led to some unexpected complications. The high doses of radiation required to destroy biological agents like anthrax are sufficient to induce damage to other materials present in the envelop. There have been reports of damage to many different items that have been subjected to irradiation, including paper, precious gems, plastic, computer discs and electronics. However, few studies have examined the effect of such treatments on items of forensic interest. In this paper, the authors focused on the impact of the irradiation process on the ability to visualize latent prints. This experiment involved using several donors, substrates （both porous and non- porous）, and visualization reagents. The results indicate that the irradiation process can have a detrimental effect on the success of certain visualization reagents.