Synchrotron radiation micro-computed tomography for the investigation of finishing treatments in historical bowed string instruments

21 July 2021

AperTO - Archivio Istituzionale Open Access dell'Università di Torino

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Synchrotron radiation micro-computed tomography for the investigation of finishing treatments in historical bowed

string instruments

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ELETTRA – Sincrotrone Trieste S.C.p.A.

This is the author's manuscript

118 Elettra Highlights 2018–2019

Synchrotron radiation

micro-computed tomography

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treatments in historical bowed

string instruments

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impressive images of the most relevant features of the layered

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techniques certainly playing a prominent VSPI8LIETTPMGEXMSRSJQMGVS'8XS the investigation of coating systems in LMWXSVMGEPFS[IHWXVMRKMRWXVYQIRXWMW presently rare.

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119 Elettra Highlights 2018–2019

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G. Fiocco1,2_{, T. Rovetta}1,3_{, M. Malagodi}1,4_{, M. Licchelli}1_{, M. Gulmini}2_{, G. Lanzafame}5_,

F. Zanini5_{, A. Lo Giudice}6_{, A. Re}6

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 _{Physics Department, University of Pavia, Pavia, Italy}

_{(ITEVXQIRXSJ1YWMGSPSK]ERH'YPXYVEP,IVMXEKI9RMZIVWMX]SJ4EZME'VIQSRE-XEP]} _{)PIXXVE7MRGVSXVSRI8VMIWXI7'T%8VMIWXI-XEP]} _{4L]WMGW(ITEVXQIRX9RMZIVWMX]SJ8SVMRS-2*28SVMRS-XEP]} IQEMPQSRMGEKYPQMRM$YRMXSMX Acknowledgments 8LMWWGMIRXMƪGVIWIEVGLLEWFIIRKIRIVSYWP] ƪRERGIHF]XLI%VZIHM&YWGLMRM*SYRHEXMSR8LI JYRHMRKSJXLI9RMZIVWMX]SJ8SVMRS6-03  ERH2)<834VSKIXXMHM%XIRIS MWOMRHP] EGORS[PIHKIH Original paper

G. Fiocco et al., EPJ Plus 133 (3- ITNTM

MRZIWXMKEXMSRSJGSQTPI\PE]IVIH structures of historical instruments is related to the possibility of obtaining ELMKLVIWSPYXMSRTMGXYVISJQEXIVMEPW even if they are almost transparent XS\VE]W*SVXLIWIQEXIVMEPWEW JSVI\EQTPIWXLISVKERMGSRIW conventional microtomographic sources do not have suitable intensity ERHWTEXMEPGSLIVIRGIXSI\TPSMXXLI TLEWIGSRXVEWXIJJIGXW[LMGLLEW been crucial in the investigation of XLIGIPPSJVEKQIRX8LITVIWIRGISV XLIPEGOSJETVITEVEXMSRPE]IVXLI position of the particles in each layer, XLIHMJJIVIRXKVEMRWM^IHMWXVMFYXMSRWEVI valuable information for a preliminary GLEVEGXIVM^EXMSRSJXLIQYWMGEP

instrument. All these features have been highlighted though the developed procedures at the Synchrotron Radiation QMGVS'8(ZMVXYEPVITVIWIRXEXMSRW that have been obtained have merits as they enable to highlight the main morphological features of the overlapping layers even describing XLIHMWXVMFYXMSRSJXMR]TEVXMGPIWMRPS[ GSRGIRXVEXMSR8SKIXLIV[MXLJYVXLIV RI[RSRMRZEWMZIVIWYPXWGSRGIVRMRK the composition of the ground layer and of the organic substances employed in XLIZEVRMWLIW[I[MPPFIWSSREFPIXS KMZIERI[TSMRXSJZMI[SRXLIƪRMWLMRK XIGLRMUYIWSJERGMIRXZMSPMRQEOMRKEVX XIGLRMUYIWEGGSVHMRKXSFSXLRSR

MRZEWMZIERHQMGVSMRZEWMZIETTVSEGLIW Among the many techniques that have been employed to investigate XLIJVEKQIRXEGSPPEFSVEXMSR[EW WIXFIX[IIRXLI%VZIHM0EFSVEXSV]MR 'VIQSREERHXLI'LIQMWXV]ERH4L]WMGW Departments of the University of Torino, [LSKSXEGGIWWXSXLI7=61)4QMGVS '8FIEQPMRIWIXXMRKYTXLIGSRHMXMSRW in order to achieve the highest spatial VIWSPYXMSRXIGLRMGEPP]TIVQMXXIHwQ2₎ JSVQMGVS'8WGERWEXXLIJEGMPMX]*MK  8LMWƪVWXKSEP[EWEGLMIZIHF]WGERRMRK WIZIVEPQSGOYTWTVITEVIHMRXLIPEF F]QMQMGOMRKXLIƪRMWLMRKPE]IVWSJE FS[IHWXVMRKMRWXVYQIRXMRSVHIVXS select the best procedures ERHWIXYT*MK 

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