A beam of electrons accelerated by a voltage V hits a target made of atoms of...

A beam of electrons accelerated by a voltage V hits a target made of atoms of atomic number Z=20 . Suppose the atom ( Z=20) has a spherical and uniform distribution of outer electrons , so that Bohr's model can be used to describe its inner electron. An electron from the accelerated beam hits an atom of the target and ejects the innermost electron of the atom. Assuming that the electron of the beam transferred all its kinetic energy to the atom and neglecting the recoil of the atom itself, find

a) the accelerating voltage

b) A K_β transition ( thats is a 3-->1 transition) occurs to fill the vacancy left behind by the ejected electron and the K_{β line is analyzed by a Bragg spectrometer . The first
maximum is observed at 4.9⁰ angle . What is the crystal
spacing, d?}

Solutions

Expert Solution

genius_generous answered 1 year ago

Next > < Previous

Related Solutions

Electrons accelerated by a potential difference of 13.15 V pass through a gas of hydrogen atoms...

Electrons accelerated by a potential difference of 13.15 V pass through a gas of hydrogen atoms at room temperature. Calculate the wavelength of light emitted with the longest possible wavelength. Calculate the wavelength of light emitted with the shortest possible wavelength.

Suppose that electrons are accelerated through a potential difference of 80 × 103 V. These collide...

Suppose that electrons are accelerated through a potential difference of 80 × 103 V. These collide with a metal slab and emit electromagnetic radiation. a) Determine the kinetic energy of an individual electron. Express the answer in Joules and electron Volts (1.0 eV = 1.6 × 10−19 J.) b) The electron collides with the metal and a photon is emitted. Determine the maximum frequency that is possible for the emitted photon.

A) Electrons accelerated by a potential difference of 13.16 V pass through a gas of hydrogen...

A) Electrons accelerated by a potential difference of 13.16 V pass through a gas of hydrogen atoms at room temperature. Calculate the wavelength of light emitted with the longest possible wavelength. B) Calculate the wavelength of light emitted with the shortest possible wavelength.

An accelerating voltage of 2.54x10^3 V is applied to an electron gun, producing a beam of...

An accelerating voltage of 2.54x10^3 V is applied to an electron gun, producing a beam of electrons originally traveling horizontally north in vacuum toward the center of a viewing screen 36.7 cm away. (a) What is the magnitude of the deflection on the screen caused by the Earth's gravitational field? m (b) What is the direction of the deflection on the screen caused by the Earth's gravitational field? up down east west (c) What is the magnitude of the deflection...

a photon beam is made from a target with a high impedance. electron beams of 6...

a photon beam is made from a target with a high impedance. electron beams of 6 and 16Mev are used in the process, shot at the target. the ratio of beam intensity is measured in the direction of the electron beam (0 degrees) and at 25 degrees from the angle of incidence.nFor what electron bean energy (and why) is the ratio of intensities (i0/i25) the largest?

In the “old days”, televisions were made from Cathode Ray Tubes whereby a beam of electrons...

In the “old days”, televisions were made from Cathode Ray Tubes whereby a beam of electrons rapidly swept across the inside of the screen as a result of strategic deflections from magnetic fields acting on the beam. Suppose that Frank has a massive 2000 inch TV in which the image has to be updated 100 times per second (to minimize the appearance of “flicker”) and that there are 100,000 rows. (a) Show that the electron beam moves across the screen...

Photons, electrons and atoms: The work function ( ) of electrons in sodium is 2.28 eV....

Photons, electrons and atoms: The work function ( ) of electrons in sodium is 2.28 eV. b. What total momentum ?(?,) (formula) is transferred to the metal surface when a photon is incident vertically and the photoelectron is emitted in the opposite direction? c. Assume that a (resting) free electron could completely absorb a photon. What wavelength would the photon have to have in order for the momentum balance to be fulfilled in this case as well? Use the so-called...

Decide if each of the atoms below will be likely to gain electrons or lose electrons...

Decide if each of the atoms below will be likely to gain electrons or lose electrons when forming an ion. Label each with the number they will gain or lose. N Mg Al I O Li Rb F

An electron in the beam of a cathod-ray tube is accelerated by a potential difference of...

An electron in the beam of a cathod-ray tube is accelerated by a potential difference of 2.20 kV . Then it passes through a region of transverse magnetic field, where it moves in a circular arc with a radius of 0.185 m . 1) What is the magnitude of the field? Express your answer with the appropriate units.

Atoms at rest emit photons isotropically. For an observer watching a beam of atoms moving at...

Atoms at rest emit photons isotropically. For an observer watching a beam of atoms moving at speed 0.9 c relative to the lab, does the emission appear isotropic to an observer in the lab? For photons emitted at angles 0,30,60,90,120,150,180 in the reference frame of the atoms, what angles of emission does the observer see? Describe qualitatively and draw the distribution of emission. Will atoms appear brighter as they approach or recede from the observer?

Subjects