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Titre du document / Document title

Colouring fabrics with Excimer lasers to simulate encoded images: the case of the Shroud of Turin

Auteur(s) / Author(s)

DI LAZZARO P. (1) ; BALDACCHINI G. (1) ; FANTI G. (2) ; MURRA D. (1) ; SANTONI A. (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) ENEA, Department of Physical Technologies and New Materials, Frascati Research Center C.P. 65, 00044 Frascati, ITALIE
(2) Department of Mechanical Engineering, University of Padua, Via Venezia 1, 35131 Padua, ITALIE

Résumé / Abstract

The faint body image embedded into the Turin Shroud has not yet explained by traditional science. We present experimental results of excimer laser irradiation (wavelengths 308 nm and 193 nm) of a raw linen fabric and of a linen cloth, seeking for a possible mechanism of image formation. The permanent coloration of both linens is a threshold effect on the laser beam intensity and it can be achieved only in a surprisingly narrow range of irradiation parameters: the shorter the wavelength, the narrower the range. We also obtained the first direct evidence of latent images impressed on linen that appear in a relatively long period (one year) after a laser irradiation that at first did not generate a clear image. The results are compared to the characteristics of the Turin Shroud, commenting the possibility that a burst of directional ultraviolet radiation may have played a role in the formation of the Shroud image.

Revue / Journal Title

Proceedings of SPIE, the International Society for Optical Engineering    ISSN  0277-786X   CODEN PSISDG 

Source / Source

Congrès
XVII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers :   ( XVII International Symposium on Gas Flow, Chemical Lasers,and High-Power Lasers )  ( 15-19 September 2008, Lisboa, Portugal )
International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers No17, Lisbon , PORTUGAL (2008)
2009  , vol. 7131[Note(s) : 1 vol., ] (18 ref.) ISBN 978-0-8194-7365-3 ; 0-8194-7365-0 ;  Illustration : Illustration ;

Langue / Language

Anglais

Editeur / Publisher

Society of Photo-Optical Instrumentation Engineers, Bellingham, WA, ETATS-UNIS  (1981) (Revue)
SPIE, Bellingham, Wash., ETATS-UNIS  (2009) (Monographie)

Mots-clés anglais / English Keywords

Gas lasers

;

Ultraviolet radiation

;

Laser beams

;

Excimer lasers

;

Latent images

;

Imaging

;

Laser irradiation

;

Mots-clés français / French Keywords

4230V

;

4255L

;

0130C

;

Laser gaz

;

Rayonnement UV

;

Faisceau laser

;

Laser excimère

;

Image latente

;

Formation image

;

Irradiation laser

;

Mots-clés espagnols / Spanish Keywords

Irradiación láser

;

Localisation / Location

INIST-CNRS, Cote INIST : 21760, 35400017297111.0610

Nº notice refdoc (ud4) : 21882421



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