The setting for the radiocarbon dating of the shroud
Los procedimientos seguidos para la realización del examen con el carbono 14 no fueron todos regulares.
La historia de los acontecimientos y de los traumas sufridos por la reliquia la convierten en un sujeto difìcil, cuya datación radiocarbónica no puede darnos datos seguros.
For historical reasons, uncalibrated radiocarbon measurements are often referred to a half-life of 5568 years.
However, this inconsistency is corrected during calibration [the reason for using the (Willard F.) Libby half-life of 5568 years instead of the correct one of 5730 years has to do with the finding in about 1962 that the true half-life was 573030 years.
Abstract La datación por el carbono 14, que tuvo lugar en 1988, colocó el origen de la Síndone entre 1260 y 1390 d. ; pero la reconstrucción de los acontecimientos que llevaron a este análisis, y las polémicas que siguieron su realización, echan fuertes sombras sobre la validez del resultado.
This carbon-14 is radioactive and decays with a half-life of 5730 years.La datación por el carbono 14, que tuvo lugar en 1988, colocó el origen de la Síndone entre 1260 y 1390 d. The method of radiocarbon dating, performed in 1988, placed the origin of the Shroud between 12 A.Consequently, according to the radiocarbon dating it cannot be definitely stated that the manufacture of the Shroud should be placed in the middle of the fourteenth century. Although carefully collected, accuracy cannot be guaranteed. Differing provisions from the publisher's actual policy or licence agreement may be applicable.In 1982 a proposal to perform the Shroud dating came informally from the laboratories of Tucson (AZ, USA), Oxford (UK) and Harwell (UK); the response, only verbal, was interlocutory, but it was specified that it was desirable perform the dating in a multidisciplinary-research context. It should be pointed out that one of the two halves was starched. After many disputes and difficulties, it was settled from 29 September to 1 October 1986 at Turin seminary.In that year physician and biophysicist John Heller of the New England Institute for Medical Research in Ridgefield (CT, USA) sent to the University of California a thread of the Shroud extracted from the area of the sample taken from the Shroud in 1973 and examined by Gilbert Raes, director of the Institute of Textile Technology in Ghent (Belgium). Gonella commented bitterly: It was two years since Cardinal Ballestrero proposed a meeting to discuss a proposal for a multidisciplinary research and now we find ourselves discussing only the radiocarbon dating and in a very tense climate, with unclear alternative proposals. Gonella The meeting was attended by the physicist Michael Tite, director of the research laboratory of the British Museum in London, the representatives of the six laboratories interested in the dating and of the laboratory of Gif-sur-Yvette (France) as well. Flury-Lemberg Everybody agreed that the Swiss textile expert Mechthild Flury-Lemberg would be entrusted with the sampling. Ballestrero Gonella replies that their presence should not be linked to the certification of the samples but they could be admitted as guests.