Dear Alan Yes, my quick read after translation suggests it is not as clear-cut as the Mitchel and Power experiment. Unless I am missing something!
Best wishes Martin > On 22 Sep 2025, at 18:29, Alan W Hewat <[email protected]> wrote: > > The Halban and Preiswerk experiment was a tour de force, and not entirely > convincing. They claimed that cold neutrons were scattered to higher angles > by a crystalline material, but does that really prove wavelike diffraction? > Less energetic particles might also be scattered to higher angles according > to classical mechanics. (Just being provocative :-) > > Alan > ________________________________ > Dr Alan Hewat, NeutronOptics > Grenoble, FRANCE (from phone) > [email protected] > +33.476984168 VAT:FR79499450856 > http://NeutronOptics.com/hewat <http://neutronoptics.com/hewat> > _______________________________ > > > On Mon, 22 Sept 2025, 11:52 Eduard E. Levin, <[email protected] > <mailto:[email protected]>> wrote: >> Hi Martin, >> >> the paper is available online: >> https://gallica.bnf.fr/ark:/12148/bpt6k3155r/f73.item >> >> Best regards, >> Eduard Levin >> >> On 22.09.2025 12:45, [email protected] <mailto:[email protected]> >> wrote: >> > Dear Rietveld users >> > >> > I wonder if anyone can get hold of this very historic paper for me >> > >> > Halban, H. and Preiswerk, P. (1936) Preuve expérimentale de la diffraction >> > des neutrons. Comptes Rendus de l’Académie des Sciences, 203, 73-75. >> > >> > It seems that in 1936 two groups, one in Columbia and one in Paris, >> > demonstrated that neutrons show wave-particle duality. Many people know >> > about the two groups who showed the electrons have wave-particle duality, >> > and many people knows the story of how it was shown that the photon shows >> > wave-particle duality. But very few people are aware of the same for the >> > neutron (even ChatGPT needs to be told the answer before it agrees that >> > this work was carried out). >> > >> > The Colombia group’s work is easy to find in the literature, but the Paris >> > group’s paper has me stumped. >> > >> > I want to write a little article about this but to be fair to the Paris >> > group I really ought to see their paper. >> > >> > So I wonder, does anyone have access to a PDF copy of this paper. My >> > efforts have floundered! >> > >> > Thanks for anyone who can try to obtain this. I feel these people should >> > not be so quickly forgotten. >> > >> > With best wishes >> > >> > Martin Dove >> > >> > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >> > Please do NOT attach files to the whole list <[email protected]> >> > Send commands to <[email protected] <mailto:[email protected]>> eg: HELP as >> > the subject with no body text >> > The Rietveld_L list archive is on >> > http://www.mail-archive.com/[email protected]/ >> > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >> > >> -- >> ------ >> Eduard Levin >> Department of Electrochemistry >> Chemical Faculty >> Moscow State University >> Leninskie Gory 1.-Str.3 >> 119991 Moscow >> Russia >> E-mail: [email protected] <mailto:[email protected]> >> Tel +7 (495) 939-1321 >> >> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >> Please do NOT attach files to the whole list <[email protected]> >> Send commands to <[email protected] <mailto:[email protected]>> eg: HELP as the >> subject with no body text >> The Rietveld_L list archive is on >> http://www.mail-archive.com/[email protected]/ >> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >> >> > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > Please do NOT attach files to the whole list <[email protected]> > Send commands to <[email protected]> eg: HELP as the subject with no body text > The Rietveld_L list archive is on > http://www.mail-archive.com/[email protected]/ > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Please do NOT attach files to the whole list <[email protected]> Send commands to <[email protected]> eg: HELP as the subject with no body text The Rietveld_L list archive is on http://www.mail-archive.com/[email protected]/ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
