Gamma decay - Revision history

FredericBernard: Change category to radioactivity

2017-04-06T12:25:14Z

Change category to radioactivity

DavidB4-bot: /* top */clean up & uniformity

2016-07-13T13:16:59Z

top: clean up & uniformity

SamHB: /* References */ If the radioactivity category exists at all, it needs to have this.

2016-05-06T22:31:38Z

References: If the radioactivity category exists at all, it needs to have this.

Aschlafly: Reverted edits by MayBKnott (Talk) to last version by CScience

2010-02-25T15:07:07Z

Reverted edits by MayBKnott (Talk) to last version by CScience

MayBKnott at 15:06, February 25, 2010

2010-02-25T15:06:28Z

CScience at 17:39, June 7, 2007

2007-06-07T17:39:06Z

CScience: Now that I can see what I did ....

2007-06-06T22:25:28Z

Now that I can see what I did ....

CScience: My browser messed up.

2007-06-06T22:24:01Z

My browser messed up.

CScience: create page

2007-06-06T22:22:28Z

create page

New page

'''Gamma decay''' is the process by which the [[nucleus]] of an [[atom]] emits a high energy [[photon]], that is, extremely short-wavelength [[electromagnetic radiation]].<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref>

It is one of three major types of [[radioactivity]] (the other two being [[alpha decay]] and [[beta decay]]).

Gamma decay is analogous to the emission of light (usually visible light) by decay in the orbits of the [[electron]]s surrounding the nucleus. In each case the energy states, and the wavelengths of the emitted radiation, are governed by the law of [[quantum mechanics]]. But while the electron orbits have relatively low energy, the nuclear states have much higher energy. For example, the sodium "D" spectral line has a wavelength of 0.6 microns and a corresponding quantum energy of about 2 electron volts, whereas a gamma ray emitted after cobalt decay has a wavelength of about 1 picometer (10<sup>-12</sup> meters) and a quantum energy of about 1 million electron volts.

Nuclei are not normally in excited states. Gamma radiation is typically incidental to alpha or beta decay—the alpha or beta decay leaves the nucleus in an excited state, and gamma decay happens soon afterwards.

Gamma radiation is the most penetrating of the three kinds. Gamma ray photons can travel through several centimeters of aluminum, for example.

==References==
<references/>

← Older revision		Revision as of 12:25, April 6, 2017
Line 13:		Line 13:

	[[Category:Radioactivity]]		[[Category:Radioactivity]]
−	~~[[Category:Physics]]~~

@@ Line 3: / Line 3: @@
 It is one of three major types of [[radioactivity]] (the other two being [[alpha decay]] and [[beta decay]]).
-Gamma decay is analogous to the emission of light (usually visible light) by decay in the orbits of the [[electron]]s surrounding the nucleus.  In each case the energy states, and the wavelengths of the emitted radiation, are governed by the law of [[quantum mechanics]]. But while the electron orbits have relatively low energy, the nuclear states have much higher energy.  For example, the sodium "D" spectral line has a wavelength of 0.6 microns and a corresponding quantum energy of about 2 electron volts, whereas a gamma ray emitted after cobalt-60 decay has a wavelength of about 1 picometer (10<sup>-12</sup> meters) and a quantum energy of about 1 million electron volts.
+Gamma decay is analogous to the emission of light (usually visible light) by decay in the orbits of the [[electron]]s surrounding the nucleus.  In each case the energy states, and the wavelengths of the emitted radiation, are governed by the law of [[quantum mechanics]]. But while the electron orbits have relatively low energy, the nuclear states have much higher energy.  For example, the sodium "D" spectral line has a wavelength of 0.6 microns and a corresponding quantum energy of about 2 electron volts, whereas a gamma ray emitted after cobalt-60 decay has a wavelength of about 1 picometer (10<sup>−12</sup> meters) and a quantum energy of about 1 million electron volts.
 Nuclei are not normally in excited states, so gamma radiation is typically incidental to alpha or beta decay&mdash;the alpha or beta decay leaves the nucleus in an excited state, and gamma decay happens soon afterwards.

← Older revision		Revision as of 22:31, May 6, 2016
Line 12:		Line 12:
	<references/>		<references/>

		+	[[Category:Radioactivity]]
	[[Category:Physics]]		[[Category:Physics]]

← Older revision		Revision as of 15:07, February 25, 2010
Line 1:		Line 1:
−	'''~~Grandma~~ decay''' is the process by which the [[nucleus]] of an [[atom]] emits a high energy [[photon]], that is, extremely short-wavelength [[Electromagnetic wave\|electromagnetic radiation]].<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref>	+	'''Gamma decay''' is the process by which the [[nucleus]] of an [[atom]] emits a high energy [[photon]], that is, extremely short-wavelength [[Electromagnetic wave\|electromagnetic radiation]].<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref>

	It is one of three major types of [[radioactivity]] (the other two being [[alpha decay]] and [[beta decay]]).		It is one of three major types of [[radioactivity]] (the other two being [[alpha decay]] and [[beta decay]]).

← Older revision		Revision as of 15:06, February 25, 2010
Line 1:		Line 1:
−	'''~~Gamma~~ decay''' is the process by which the [[nucleus]] of an [[atom]] emits a high energy [[photon]], that is, extremely short-wavelength [[Electromagnetic wave\|electromagnetic radiation]].<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref>	+	'''Grandma decay''' is the process by which the [[nucleus]] of an [[atom]] emits a high energy [[photon]], that is, extremely short-wavelength [[Electromagnetic wave\|electromagnetic radiation]].<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref>

	It is one of three major types of [[radioactivity]] (the other two being [[alpha decay]] and [[beta decay]]).		It is one of three major types of [[radioactivity]] (the other two being [[alpha decay]] and [[beta decay]]).

← Older revision		Revision as of 22:25, June 6, 2007
Line 1:		Line 1:
−	'''Gamma decay''' is the process by which the [[nucleus]] of an [[atom]] emits a high energy [[photon]], that is, extremely short-wavelength [[electromagnetic radiation]].<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref>	+	'''Gamma decay''' is the process by which the [[nucleus]] of an [[atom]] emits a high energy [[photon]], that is, extremely short-wavelength [[Electromagnetic wave\|electromagnetic radiation]].<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref>

	It is one of three major types of [[radioactivity]] (the other two being [[alpha decay]] and [[beta decay]]).		It is one of three major types of [[radioactivity]] (the other two being [[alpha decay]] and [[beta decay]]).

← Older revision		Revision as of 22:24, June 6, 2007
Line 11:		Line 11:
	==References==		==References==
	<references/>		<references/>
		+
		+	[[Category:Physics]]