Anisotropic and impulsive neutron emissions from brittle rocks under mechanical load

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• 作者：Andrea Manuello Bertetto (1)
  Battista Grosso (2)
  Roberto Ricciu (2)
  Daniele Rizzu (1)
  
  1. Dipartimento di Ingegneria Meccanica Chimica e dei Materiali ; Universit脿 degli Studi di Cagliari ; Cagliari ; Italy
  2. Dipartimento di Ingegneria Civile ; Ambientale e Architettura ; Universit脿 degli Studi di Cagliari ; Cagliari ; Italy
  
• 关键词：Neutron emission ; Mechanical load ; Piezonuclear reactions ; Brittle fracture ; Rock crushing failure
• 刊名：Meccanica
• 出版年：2015
• 出版时间：May 2015
• 年：2015
• 卷：50
• 期：5
• 页码：1177-1188
• 全文大小：2,555 KB
• 参考文献：1. Diebner, K (1962) Fusionsprozesse mit Hilfe konvergenter Sto脽wellen einige 盲ltere und neuere Versuche und 脺berlegungen. Kerntechnik 3: pp. 89-93
  2. Winterberg, F (1984) Autocatalytic fusion鈥揻ission implosions. Atomenergie-Kerntechnik 44: pp. 146
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  6. Carpinteri, A, Cardone, F, Lacidogna, G (2010) Energy emissions from failure phenomena: mechanical, electromagnetic, nuclear. Exp Mech 50: pp. 1235-1243 CrossRef
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  9. Carpinteri, A, Cardone, F, Lacidogna, G (2009) Piezonuclear neutrons from brittle fracture: early results of mechanical compression tests. Strain 45: pp. 332-339 CrossRef
  10. Carpinteri, A, Borla, O, Lacidogna, G, Manuello, A (2010) Neutron emissions in brittle rocks during compression tests: monotonic vs. cyclic loading. Phys Mesomech 13: pp. 268-274 CrossRef
  11. Cardone F, Mignani R, Petrucci A (2012) Piezonuclear reactions. J Adv Phys 1:3鈥?6. doi:10.1166/jap.2012.1015
  12. Cardone, F, Carpinteri, A, Lacidogna, G (2009) Piezonuclear neutrons from fracturing of inert solids. Phys Lett A 373: pp. 4158-4163 CrossRef
  13. Cardone, F, Mignani, R (2007) Deformed spacetime. Springer, Dordrecht CrossRef
  14. Mignani, R, Cardone, F, Petrucci, A (2014) Generalized lagrange structure of deformed minkowski spacetime. Natural Sci 6: pp. 399-410 CrossRef
  15. Carpinteri A, Chiodoni A, Manuello A, Sandrone R (2011) Energy dispersive X-ray spectroscopy analysis on rock samples subjected to piezonuclear tests. In: Conference proceedings of the society for experimental mechanics, pp 49鈥?6
  16. Carpinteri A, Lacidogna G, Manuello A, Borla O (2010) Piezonuclear transmutations in brittle rocks under mechanical loading: microchemical analysis and geological confirmations. Recent Adv Mech 361鈥?82. doi:10.1007/978-94-007-0557-9_19
  17. Carpinteri, A, Manuello, A (2012) An indirect evidence of piezonuclear fission reactions: geomechanical and geochemical evolution in the Earth鈥檚 crust. Phys Mesomech 15: pp. 14-23 CrossRef
  18. Carpinteri, A, Manuello, A (2011) Geomechanical and geochemical evidence of piezonuclear fission reactions in the earth鈥檚 crust. Strain 47: pp. 267-281 CrossRef
  19. Bubble Technology Industries (1992) Bubble detector datasheet. http://www.bubbletech.ca/pdfs/BTI_BUBBLE_General_May72009.pdf. Accessed 5 July 2013
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  21. Korun M, Martin膷i膷 R, Pucelj B (1996) Neutron Measurement by in situ Gamma-ray spectrometry using cadmium converters. J. Stefan Institute, Ljubjiana, Slovenia. http://www.irpa.net/irpa9/cdrom/VOL.2/V2_171.PDF. Accessed 14 April 2014
  
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Mechanics
  Civil Engineering
  Automotive and Aerospace Engineering and Traffic
  Mechanical Engineering
  
• 出版者：Springer Netherlands
• ISSN：1572-9648

文摘

The aim of the present research work is to investigate the emission of neutrons from inert materials subjected to mechanical load. If confirmed, this emission can be seen as a proof of the existence of piezonuclear reactions, i.e. nuclear reactions of fission induced by pressure. This investigation was performed by loading specimens of granite under uniaxial compression till failure and recording the emissions through passive dosimeters. In the present work, the experimental setup was designed and realised, in accordance with what is described in the literature as concerns neutron emissions from inert rock specimens under compressive uniaxial loads. The proper functioning of dosimeters was verified and the experimental functional procedure with radioactive sources was described in the paper. The preliminary experimental activity of the measurement of the background level of neutrons was performed describing the set up allowing it. Finally, the functional tests with radioactive sources, measurement of background values and neutron emission tests during the monoaxial destructive compression tests of the granite specimen were compared and discussed.