CHARACTERIZATION OF LASER CLEANING OF LIMESTONE

被引:83
作者
COOPER, MI [1 ]
EMMONY, DC [1 ]
LARSON, J [1 ]
机构
[1] NATL MUSEUMS & GALLERIES MERSEYSIDE,LIVERPOOL L3 1DG,ENGLAND
关键词
LASERS (ND YAG); LASER CLEANING; LIMESTONE;
D O I
10.1016/0030-3992(95)93962-Q
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The precise and controlled cleaning of polluted limestone sculpture by a Q-switched Nd:YAG laser is described. Acoustic monitoring of the cleaning process is used to demonstrate the selective removal of black crusts from stone surfaces. Results are also presented which show that by applying a thin layer of water to the surface of the crust prior to irradiation, cleaning can be achieved at a lower energy than with normal laser cleaning. The probability of damage to the underlying stone is, therefore, reduced.
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页码:69 / 73
页数:5
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