Gamma Radiation for Preservation
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Brazilian Journal of Radiation Sciences
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Preserving historical artifacts, such as VHS tapes, in archival collections
presents significant challenges, particularly in environments conducive to mold
contamination. Inadequate control of temperature and relative humidity can promote
mold growth, endangering the structural and informational integrity of these cultural
assets. This study explores the application of gamma radiation treatment for the
disinfection of mold-contaminated VHS tapes stored in historical archives. Utilizing the
Multipurpose Gamma Irradiation Facility at the Institute of Energy and Nuclear Research
(IPEN) in São Paulo, Brazil, we investigated the efficacy of gamma radiation in eradicating
mold while preserving the tapes' mechanical properties and visual appearance. Despite
the long-standing use of gamma ionization for decontamination since the 1960s, this
research is novel in its focus on VHS tape preservation. Tensile tests and visual
inspections were conducted on control, biodeteriorated, and gamma-irradiated samples.
Results showed that gamma irradiation significantly improved tensile strength and strain
in mold-contaminated tapes, with no observable changes in their visual appearance. This
study contributes to the development of innovative preservation techniques, addressing
the unique challenges posed by environmental factors in the storage of historical materials
and underscoring the potential of gamma radiation as a dual-function method for
disinfection and mechanical reinforcement.
Como referenciar
NAGAI, M.L.E.; DIAS, D.B.; VASQUEZ, P. Gamma Radiation for Preservation: Novel Approach to Disinfect VHS Tapes in Historical Archives. Brazilian Journal of Radiation Sciences, v. 12, p. 1-12, 2024. 4A. DOI: 10.15392/2319-0612.2024.2535. Disponível em: https://repositorio.ipen.br/handle/123456789/49824. Acesso em: 29 Apr 2026.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.