VESUVIO spectrometer

In the course of time (since 1995), the data analysis has been subject to various criticisms [Blostein 2001 Blostein 2003 (a) Blostein 2003 (b) Cowley 2003] which, however, have been refuted by several authors [Chatzidimitriou-Dreismann 2002 (b) Abdul-Redah 2003 Mayers 2004], A further criticism was that all these effects were found on one instrument only, i.e., VESUVIO spectrometer of the ISIS neutron spallation source at the Rutherford Apple-ton Laboratory in UK. There was no possibility to confirm this effect on a different apparatus. However, very recently, this effect was confirmed using an independent experimental method, electron-proton Compton scattering at the Australian National University, Canberra [Chatzidimitriou-Dreismann 2003 (a)]. This experiment has attracted a vast attention by the scientific community [Physics News 2003 Physics Today 2003 Scientific American 2003],... 

Figure 1 A schematic representation of the VESUVIO spectrometer at ISIS...

The VESUVIO spectrometer is mainly used to determine atomic momentum distributions in condensed matter systems, by "deep inelastic neutron scattering" (DINS). DINS relies upon the fact that, at sufficiently high momentum transfer, the IA can be used to interpret data. The validity of the IA in... 

Monte Carlo (MC) simulations of VESUVIO data can be performed using the computer code DINSMS, which has been described previously [Mayers 2002], The MC program follows individual neutron histories through the spectrometer and then bins them in t, according to the time they have taken to travel between moderator and detector. The input to the program is... 

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