The radius of the first eight coaxial diffraction ring of a polycrystalline substance with a cubic structure are: 6.28, 8.91, 10.92, 12.59, 14.04, 15.38, 16.64, 17.77 mm, respectively. The lattice constant a = 2.81 Å and the acceleration voltage of electron microscope is 1200 kV. (1) Determine the structure of this substance and index these eight rings. Please provide the calculations in details. (2) Please calculate the wavelength of electrons at 1200 kV. (3) Calculate the camera length L.
The radius of the first eight coaxial diffraction ring of a polycrystalline substance with a cubic structure are: 6.28, 8.91, 10.92, 12.59, 14.04, 15.38, 16.64, 17.77 mm, respectively. The lattice constant a = 2.81 Å and the acceleration voltage of electron microscope is 1200 kV. (1) Determine the structure of this substance and index these eight rings. Please provide the calculations in details. (2) Please calculate the wavelength of electrons at 1200 kV. (3) Calculate the camera length L.
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![The radius of the first eight coaxial diffraction ring of a polycrystalline substance with
a cubic structure are: 6.28, 8.91, 10.92, 12.59, 14.04, 15.38, 16.64, 17.77 mm,
respectively. The lattice constant a = 2.81 Å and the acceleration voltage of electron
microscope is 1200 kV.
(1) Determine the structure of this substance and index these eight rings. Please provide
the calculations in details.
(2) Please calculate the wavelength of electrons at 1200 kV.
(3) Calculate the camera length L.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9f848495-aa6d-4c10-a047-93fbf84579cf%2F87aa5bfd-f414-4bad-84e1-2852aef75258%2Fluq3s49_processed.png&w=3840&q=75)
Transcribed Image Text:The radius of the first eight coaxial diffraction ring of a polycrystalline substance with
a cubic structure are: 6.28, 8.91, 10.92, 12.59, 14.04, 15.38, 16.64, 17.77 mm,
respectively. The lattice constant a = 2.81 Å and the acceleration voltage of electron
microscope is 1200 kV.
(1) Determine the structure of this substance and index these eight rings. Please provide
the calculations in details.
(2) Please calculate the wavelength of electrons at 1200 kV.
(3) Calculate the camera length L.
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