Physics, 15.04.2020 04:13 heyitzmeamelie

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:
The angle of incidence has to be equal to the angle of reflection.

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,

2dsin(?)=m?for m=1,2,….

Part A

An x-ray beam with wavelength 0.240 nm is directed at a crystal. As the angle of incidence increases, you observe the first strong interference maximum at an angle 22.5 ?. What is the spacing d between the planes of the crystal?

Express your answer in nanometers to four significant figures.

Part B

Find the angle ?subcript2at which you will find a second maximum.

Express your answer in degrees to three significant figures.

Answers: 3

Show answers

Another question on Physics

Physics, 21.06.2019 18:00

What happens to the velocity of the car when the upward pull of the cable is greater than the downward pull of gravity as the car rises toward the top?

Answers: 1

Answer

Physics, 21.06.2019 18:10

Awheelhas a radius of 4.8 m. howfar (path length) does a point on the circumference travel if thewheel is rotated through angles of 30°, 30 rad, and 30 rev,respectively?

Answers: 3

Answer

Physics, 22.06.2019 05:20

Very large accelerations can injure the body, especially if they last for a considerable length of time. one model used to gauge the likelihood of injury is the severity index ( ), defined as =/ . in the expression, is the duration of the accleration, but is not equal to the acceleration. rather, is a dimensionless constant that = the number of multiples of that the acceleration is equal to.in one set of studies of rear-end collisions, a person's velocity increases by 13.7 km/h with an acceleration of 36.0 m/s2 . let the + direction point in the direction the car is traveling. what is the severity index for the collision?

Answers: 1

Answer

Physics, 22.06.2019 14:40

You throw a small rock straight up from the edge of a highway bridge that crosses a river. the rock passes you on its way down, 7.00 s after it was thrown. what is the speed of the rock just before it reaches the water 28.0 m below the point where the rock left your hand? ignore air resistance.

Answers: 2

Answer

You know the right answer?

When an x-ray beam is scattered off the planes of a crystal, the scattered beam creates an interfere...

Questions