What is spontaneous emission, Physics

Assignment Help:

What is spontaneous emission? Explain in brief.

Spontaneous emission:

a. This is the process by that a light source as like an atom, molecule, nano-crystal or nucleus into an excited state undergoes a transition to the ground state and then emits a photon.

b. The atoms into the excited state drop to the lower energy state after they have stayed within the excited state for a short duration of time known their life time.

c. Throughout this process photons of energy = E2 - E1, that is energy difference in between the two states of the atom, those are emitted.

d. Spontaneous emission of light or luminescence is a basic process which plays a necessary role in various phenomena into nature and forms the basis of several applications, as like fluorescent tubes, plasma display panels, television screens, lasers and light emitting diodes.

773_Spontaneous emission.png


Related Discussions:- What is spontaneous emission

What is the composition of nucleus, Q. Carbon-14, or 14 C, is an isotope o...

Q. Carbon-14, or 14 C, is an isotope of the common 12 6 C, and is used in dating ancient artifacts. What is the composition of its nucleus?   Six protons (equal to Z) an

Laws of motion: find the time, A thin rod of length 1 m is fixed in a verti...

A thin rod of length 1 m is fixed in a vertical position inside a train, which is moving horizontally with constant acceleration 4 m/s2. A bead can slide on the rod, and friction c

State kirchhoff rules of current distribution, State Kirchhoff's rules of c...

State Kirchhoff's rules of current distribution in an electrical network. Using these rules verify the value of the current in the electric circuit given below.

Explain the term poly elastic, Explain the term poly elastic and give some ...

Explain the term poly elastic and give some of example.

Work, 1. A child pulls a toy car weighing 0.20 kg across a smooth floor by ...

1. A child pulls a toy car weighing 0.20 kg across a smooth floor by means of a string attached to it. If the string makes an angle of 60° to the floor and the child pulls with a f

Fermi dirac statistics, It determines the probability of an electron occupy...

It determines the probability of an electron occupying a state at an energy level E. This takes into account that a collection of electron must obey the Pauli Exclusion Principle.

Trojan points and satellites, Trojan points: It is L4 & L5, the two dy...

Trojan points: It is L4 & L5, the two dynamically stable Lagrange points (under certain conditions). Trojan satellites: This is the satellites that orbit a body at o

Explain static electricity, Static Electricity: 1. There are two types ...

Static Electricity: 1. There are two types of charges positive and negative. 2. Like charges repel and unlike charges attract each other. 3. Charged bodies make electric

Describe the principle of a moving coil galvanometer, With the help of a ne...

With the help of a neat and labelled diagram, describe the underlying principle and working of a moving coil galvanometer. What is the function of? (i) Uniform radial field

Deformation, how to calculate the mass which causes a spring with a constan...

how to calculate the mass which causes a spring with a constant 12.5 n/m-1 to extend 12mm

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd