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A beam of neutrons with a de Broglie wavelength of 0.260 nm diffracts from a crystal of table salt, which has an interionic spacing of 0.283 nm .What is the speed of the neutrons? What is the angle of the second interference maximum?

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onyebuchinnaji

The speed of the neutrons is 1.53 x 10Ā³ m/s and the Ā angle of the second interference maximum is 66.7ā°.

Speed of the neutrons

The speed of the neutrons is calculated as follows;

v = h/mĪ»

v = (6.626 x 10ā»Ā³ā“)/(1.67 x 10ā»Ā²ā· x 0.26 x 10ā»ā¹)

v = 1.53 x 10Ā³ m/s

Angle of the second interference maximum

The angle of the second interference maximum is calculated as follow;

Ī» = dsinĪø

sinĪø = Ī»/d

sinĪø = (0.26)/(0.283)

sinĪø = 0.9187

Īø = 66.7ā°

Learn more about wavelength here: https://brainly.com/question/10728818

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