Calagera Pagano_ Interference

Question Three Two aluminium samples, A and B, are to be examined using Bragg reflection. For sample A the first-order Bragg reflection from (111) planes occurs at an angle of 25°00', while for sample B the first order Bragg reflection from (111) planes was at 25°20'. Aluminium atoms are 1.8 x 10-10 m diameter and form an FCC structure. X-radiation of wavelength 1.52 x 10-10 m is used for the analysis of two samples of aluminium. Answer the following questions: (i) Calculate the lattice parameter of an aluminium atom. (ii) Calculate the interplanar distances for the two samples. (ii) Which sample shows pure aluminium, and what is the reason for the difference? (iv) Mention four uses of pure aluminium.

Question B1 The material rubidium antimony selenide, Rb3SbSe3, is known to have a cubic crystal structure. A diffraction experiment using Cu Ka radiation of wavelength X = 1.5406 Å showed peaks at 2012.319, 15.103°, 17.456°, 19.536°, 21.421°, and 24.784°. a) Index each of these peaks (that is, calculate possible h, k, and I values for each of them). Show that these data are consistent with a cubic unit cell, and calculate its unit cell parameter a. Which cubic Bravais lattice (i.e., simple cubic, body-centred cubic, or face-centred cubic) is most appropriate? On the other hand, the related compound rubidium manganese selenide, RbMnSe2, has a body-centred tetragonal structure with unit cell parameters a = 4.266 Å and c = 14.033 Å. Its motif consists of a Rb atom at (0, 0, 0), a Mn atom at (½, 0, 1), and Se atoms at (½, 1, 0.15) and (,,-0.15). b) Draw the unit cell of this structure in projection down the b axis, with the a axis vertical and the c axis horizontal. Draw the Mn atoms as…

solid state physics 1) If you know that the Bragg angle of reflection from (111) planes in an aluminum crystal is 19.2°. Calculate the distance between these planes, knowing that the wavelength of the X-rays used is 1.54A, and the crystal structure of aluminum is of the face-centered cubic type.   2) Calculate Avogadro's number given that aluminum has a density of 2.7 g/cm and an atomic weight of 27 ?

It has been suggested that solar powered space ships could get a boost from a laser either on Earth or in orbit around Earth. The laser would have to be very powerful to give any measurable benefit to the ship. If the laser produces a 0.1-m diameter beam of 446-nm light, what is the minimum angular spread of the beam? rad Additional Materials

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Explain the double slit experiment with a diagram.

can you solve step by step

Question A9 A laser with 589 nm wavelength and a beam diameter of 2 mm is fed through a beam-expander, then aimed from the G.O. Jones building to the Canary Wharf tower at a distance of 2.75 km. What expansion factor is required for the beam-expander in order that the diffraction-limited spot at Canary Wharf tower has a diameter of 30 cm (defined as the diameter of the first dark ring) ?

Its solid state physics

Lasers and Diffraction Gratings: If you had a grating that contained fewer lines per meter than another, what differences would you expect? Explain.

is incident perpendicularly on The a soap 3) Light air. film (with n=1.5) suspendened in film is 0,2 jum. What visible light thick ness of the soap nght of constructive inferferene e the thin film?. visibe spectvm range trom is the Shortest wave le that undergoes fully upon retle ction on Recall that the wave lengths of the 400nm to 700nm

I Review I Constants I Periodic Table X rays with a wavelength of 0.19 nm undergo first- order diffraction from a crystal at a 57 ° angle of incidence. Part A At what angle does first-order diffraction occur for x rays with a wavelen of 0.12 nm ? Express your answer using two significant figures. ΑΣφ ? = Submit Request Answer

I Review I Constants I Periodic Table X rays with a wavelength of 0.12 nm undergo first- order diffraction from a crystal at a 61 ° angle of incidence. Part A What is the angle of second-order diffraction? Express your answer using two significant figures. ? 02 = Submit Request Answer

Using X-ray Diffraction When an x-ray beam is scattered off the planes of a crystal, the scattered beam creates an interference pattern. This phenomenon is called Bragg scattering. For an observer to measure an interference maximum, two conditions have to be satisfied: 1. The angle of incidence has to be equal to the angle of reflection. 2. The difference in the beam's path from a source to an observer for neighboring planes has to be equal to an integer multiple of the wavelength; that is, 2d sin(0) = mx for m = 1, 2, .... The path difference 2d sin(0) can be determined from the diagram ( Figure 1). The second condition is known as the Bragg condition. Figure d sine d sine 1 of 1 Part A —| ΑΣΦ d= 0.1339 Submit Previous Answers Request Answer An x-ray beam with wavelength 0.250 nm is directed at a crystal. As the angle of incidence increases, you observe the first strong interference maximum at an angle 21.0°. What is the spacing d between the planes of the crystal? Express your answer…

Using X-ray Diffraction When an x-ray beam is scattered off the planes of a crystal, the scattered beam creates an interference pattern. This phenomenon is called Bragg scattering. For an observer to measure an interference maximum, two conditions have to be satisfied: 1. The angle of incidence has to be equal to the angle of reflection. 2. The difference in the beam's path from a source to an observer for neighboring planes has to be equal to an integer multiple of the wavelength; that is, 2d cos(0) = mλ for m = 1, 2,.... The path difference 2d cos(0) can be determined from the dinaram (Cinuro 11 The cocond condition is known o 3 of 22 Review | Constants | Periodic Table An x-ray beam with wavelength 0.200 nm is directed at a crystal. As the angle of incidence increases, you observe the first strong interference maximum at an angle 69.5°. What is the spacing d between the planes of the crystal? Express your answer in nanometers to three significant figures. ΤΟ ΑΣΦ d = ? nm Figure of >…

Explain how the modern double-slit experiment showed different results than Young’s double-slit experiment.