DNA molecules are arranged as a tightly coiled helix. (:
DNA molecules are arranged as a tightly coiled helix
The visualisation that the diffraction patterns enabled, made it possible for the physical parameters of the DNA molecule to be postulated, and indeed constructed by Crick and Watson.
It was Maurice Wilkins and Rosalind Elise Franklin.
Franklin
Maurice Wilkins & Rosalind Franklin : they developed a high quality x-ray diffraction photographs of strands of DNA. these photographs suggested that the DNA molecule resembled a tightly coiled helix and and was composed of 2 or 3 chains of nucleotides .
Rosalind Franklin and Maurice Wilkins both gave a n x-ray of a Diffraction of a DNA Crystal
James Watson and Francis Crick elucidated the structure of DNA in 1953. Also useful in a sterochemical fashion was the X-ray diffraction work of Rosalind Franklin. Wilkins also contributed diffraction work.
Maurice Wilkins and Rosalind Franklin
Maurice Wilkins and Rosalind Franklin.
A helix
The answer (if you had formulated your question properly - where is the list of researchers you allude to?) would be Rosalind Franklin.
He used X-ray diffraction
While Crick, Wilkins and Franklin all used X-ray diffraction to try and decipher the molecule of DNA the best work was done by Rosalind Franklin with here B-51 diffraction " picture " of the double helix.