neutron

Table of Contents

Introduction References & Edit History Related Topics

Images & Videos

Bohr atomic model of a nitrogen atom

A simplified look into the structure of an atom

protons, neutrons, pions, and other hadrons

Figure 13: Nuclear vibratory motion in the giant dipole resonance. Protons and neutrons move in opposite directions.

Why is carbon called the element of life?

What the fission of a uranium nucleus by a neutron looks like

Discover

Srinivasa Ramanujan, Indian mathematician and autodidact.

6 Interesting Facts about Srinivasa Ramanujan

King Cobra snake in Malaysia. (reptile)

9 of the World’s Deadliest Snakes

Ice Sledge Hockey, Hockey Canada Cup, USA (left) vs Canada, 2009. UBC Thunderbird Arena, Vancouver, BC, competition site for Olympic ice hockey and Paralympic ice sledge hockey. Vancouver 2010 Olympic and Paralympic Winter Games, Vancouver Olympics

10 Best Hockey Players of All Time

Indian hijras participate in a religious procession in Gandhinagar, India, some 30 kilometers from Ahmedabad, on March 22, 2017. Hijra is a term used in South Asia which refers to transgender individuals who are born male. (gender identity, gender expression)

6 Cultures That Recognize More than Two Genders

The impeachment trial of Pres. Andrew Johnson, illustration from Frank Leslie's Illustrated Newspaper, March 28, 1868.

What If the President Is Impeached?

Stylish light blue jeans on wooden background, closeup of inset pocket

Why Do Jeans Have That Tiny Pocket?

The Battle of Gettysburg, July 1-3, 1863. (Civil War, Pennsylvania)

9 Worst Generals in History

neutron: References & Edit History

More Articles On This Topic

Assorted References

major reference
- In subatomic particle
- In subatomic particle: Linking to the cosmos
cosmology and nucleosynthesis
- In cosmology: Primordial nucleosynthesis
- In cosmology: Inhomogeneous nucleosynthesis
discovery
- In atom: Structure of the nucleus
interaction with matter
- In radiation measurement: Interactions of neutrons
probable origins of magnetospheric protons
- In ionosphere and magnetosphere: Van Allen radiation belts
weak interaction
- In weak interaction

atomic structure

alpha particles
- In radiation measurement: Radiation interactions in matter
chemical elements
- In chemical element: The structure of atoms
crystal structures
- In crystal: Determination of crystal structures
isotopes
- In isotope
nucleons
- In nucleon
quarks
- In quark
radiation detection
- In radiation measurement: Neutron-activation foils
resonance-ionization mass spectrometry
- In spectroscopy: Resonance-ionization mass spectrometry

nuclear explosions and reactions

fission

fissile materials
- In nuclear fission: History of fission research and technology
- In nuclear weapon: The fission process
fission chain reactions
- In nuclear reactor: Principles of operation

fusion reactors
- In fusion reactor: General characteristics
prompt neutron
- In prompt neutron
radiation
- In radiation: Matter rays
- In radiation: Neutrons

work of

Bethe
- In Hans Bethe: From atomic warrior to political physicist
Brockhouse
- In Bertram N. Brockhouse
Chadwick
- In James Chadwick
Curie
- In Marie Curie: Later work
Hofstadter
- In Robert Hofstadter
Rutherford
- In Ernest Rutherford: Return to Cambridge of Ernest Rutherford
Shull
- In Clifford G. Shull

Article Contributors

Primary Contributors

The Editors of Encyclopaedia Britannica

Other Encyclopedia Britannica Contributors

Article History

Type	Description	Contributor	Date
	Modified link of Web site: Nature - Scientific Reports - The origin of neutron biological effectiveness as a function of energy.	Yamini Chauhan	Nov 07, 2024
	Add new Web site: NASA - The Health Risks of Extraterrestrial Environments - Neutron Properties and Definitions.	Gloria Lotha	Sep 27, 2024
	Add new Web site: Nature - Scientific Reports - The origin of neutron biological effectiveness as a function of energy.	Aakanksha Gaur	Jul 05, 2024
	Add new Web site: Science and Technology Facilities Council - ISIS Neutron and Muon Source - What is a neutron?	Gloria Lotha	Nov 03, 2023
	Add new Web site: EWT - Neutron.	Gloria Lotha	Jul 28, 2023
	Links and videos added.	The Editors of Encyclopaedia Britannica	Apr 21, 2023
	Add new Web site: Space.com - Neutrons: Facts about the influential subatomic particles.	Gloria Lotha	Jan 25, 2023
	Add new Web site: Chemistry LibreTexts - Neutrons.	Aakanksha Gaur	Dec 19, 2022
	Article revised and updated.	Erik Gregersen	Aug 10, 2022
	Add new Web site: Rader Chem4Kids.com - Neutrons.	Surabhi Sinha	Jul 28, 2014
	Add new Web site: Jefferson Lab - All About Atoms.	Marco Sampaolo	Feb 18, 2011
	Add new Web site: Jefferson Lab - All About Atoms.	Marco Sampaolo	Feb 18, 2011
	Changed value of neutron mass from 1.67495 x 10^-27 kg to 1.67493 x 10^-27 kg and ratio to electron mass from 1,840 to 1,839.	Erik Gregersen	Aug 11, 2010
	Added new Web site: History of The Universe - neutron.	Gaurav Shukla	Dec 31, 2007
	Added new Web site: HyperPhysics - Protons and Neutron.	Gaurav Shukla	Dec 31, 2007
	Article revised and updated.	The Editors of Encyclopaedia Britannica	Mar 16, 2007
	Article revised and updated.	Robert Curley	Jul 20, 2006
	Article revised.	The Editors of Encyclopaedia Britannica	Jan 11, 1999
	Article added to new online database.	The Editors of Encyclopaedia Britannica	Jul 20, 1998