Értékes m?tárgyak archeometriai vizsgálata során az els?dleges követelmény a m?tárgy épségének megóvása. A neutron ideális "vizsgálati eszköz", mivel elektromos semlegessége miatt képes az anyag mélyebb rétegébe behatolni, és ott különböz? magreakciókban részt venni - a minta károsítása nélkül. Mind a neutronbefogáson alapuló módszereket (Neutrontomográfia - NT, Neutronaktivációs Analízis - NAA, Prompt-gamma Aktivációs Analízis - PGAA és a Neutron Rezonancia-befogásos Analízis - NRCA), mind a neutronszóráson alapuló módszereket (Repülési Id? Neutrondiffrakció - TOF-ND és a Kisszög? Neutronszórás - SANS) korábban már alkalmazták archeometriai kutatásokban. 2006-ban "Ancient Charm" elnevezéssel egy új nemzetközi kutatási programot indított az Európai Közösség, melynek célja a fent említett "neutronos" módszerek egyesítése értékes m?tárgyak térbeli szerkezet- és összetétel-vizsgálatára. A hagyományos (tömbi) PGAA-t els?ként a Budapesti Kutatóreaktor 5·107 n/cm2·s1 intenzitású neutronnyalábján fejlesztjük tovább a képalkotás (PGAI) irányába. A vizsgálatokra szánt reprezentatív m?tárgyakat a Magyar Nemzeti Múzeum, a római Villa Adriana és a leideni Nemzeti Múzeum gy?jteményéb?l választjuk.
When investigating a valuable artistic object, the first and foremost requirement is to keep it intact. Neutrons, elemental particles having zero electric charge can enter deep into the irradiated material, and they can undergo different nuclear interactions, without causing any damage of artefacts. Both the neutron capturebased methods (i. e. Neutron Tomography - NT, Neutron Activation Analysis - NAA, Prompt Gamma Activation Analysis - PGAA and Neutron Resonance Capture Analysis - NRCA) and the neutron scattering-based methods (i. e. Time of Flight Neutron Diffraction - TOF-ND and Small Angle Neutron Scattering - SANS) have been previously applied to archaeometric research. In 2006, a new European Commission funded project with ten collaborators, called Ancient Charm, was launched with the aim of combining the above mentioned neutron based methods to achieve 3-D imaging and elemental mapping of museum objects with complex structures. The first experiments to develop bulk elemental PGAA towards elemental mapping and imaging of complex objects (i. e. to work out PGAI) will be attempted at the Institute of Isotopes, on the 5·107 n/cm2·s1 cold neutron beam of the Budapest Research Reactor. Representative archaeological objects for investigations have been chosen from the collections of the Hungarian National Museum, Villa Adriana near Rome, and the National Museum for Antiquities of Leiden.
From PGAA to PGAI: from bulk analysis to elemental mapping
2006
Abstract
When investigating a valuable artistic object, the first and foremost requirement is to keep it intact. Neutrons, elemental particles having zero electric charge can enter deep into the irradiated material, and they can undergo different nuclear interactions, without causing any damage of artefacts. Both the neutron capturebased methods (i. e. Neutron Tomography - NT, Neutron Activation Analysis - NAA, Prompt Gamma Activation Analysis - PGAA and Neutron Resonance Capture Analysis - NRCA) and the neutron scattering-based methods (i. e. Time of Flight Neutron Diffraction - TOF-ND and Small Angle Neutron Scattering - SANS) have been previously applied to archaeometric research. In 2006, a new European Commission funded project with ten collaborators, called Ancient Charm, was launched with the aim of combining the above mentioned neutron based methods to achieve 3-D imaging and elemental mapping of museum objects with complex structures. The first experiments to develop bulk elemental PGAA towards elemental mapping and imaging of complex objects (i. e. to work out PGAI) will be attempted at the Institute of Isotopes, on the 5·107 n/cm2·s1 cold neutron beam of the Budapest Research Reactor. Representative archaeological objects for investigations have been chosen from the collections of the Hungarian National Museum, Villa Adriana near Rome, and the National Museum for Antiquities of Leiden.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
