D2O photodisintegration simulation - Revision history

Kosiolek at 15:12, 11 April 2011

2011-04-11T15:12:07Z

2011-04-11T15:10:40Z

2011-04-11T15:07:22Z

2011-04-11T15:03:45Z

2011-04-11T14:58:57Z

2011-04-11T14:11:31Z

2011-04-11T14:11:09Z

2011-04-11T14:04:03Z

2011-04-11T13:59:13Z

2011-04-11T13:56:50Z

@@ Line 21: / Line 21: @@
 <math>10^6</math> brem photons were thrown on the target and as a detector it was used a ring surrounding the target with the transversal dimensions corresponding to the dimensions of the scintillator. The total number of counts in a single detector will be a small part of the number of counts presented on the plot.
-Hence, it seems that there is no need to worry about neutrons produced in the lead shielding of our neutron detectors because we do not have many photons being able to produce neutrons in the lead.
+Hence, it seems that there is no need to worry about neutrons produced in the lead shielding of our neutron detectors because we do not have many photons which are energetic enough to produce neutrons in the lead.
 ==Neutron spectra separation==

@@ Line 19: / Line 19: @@
 [[File:Modified_brem.gif | 550 px]]
-<math>10^6</math> brem photons were thrown on the target and as a detector it was used a ring surrounding the target with the transversal dimensions corresponding to the dimensions of the scintillator.
+<math>10^6</math> brem photons were thrown on the target and as a detector it was used a ring surrounding the target with the transversal dimensions corresponding to the dimensions of the scintillator. The total number of counts in a single detector will be a small part of the number of counts presented on the plot.
 Hence, it seems that there is no need to worry about neutrons produced in the lead shielding of our neutron detectors because we do not have many photons being able to produce neutrons in the lead.

← Older revision		Revision as of 15:07, 11 April 2011
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	[[File:Modified_brem.gif \| 550 px]]		[[File:Modified_brem.gif \| 550 px]]
		+
		+	<math>10^6</math> brem photons were thrown on the target and as a detector it was used a ring surrounding the target with the transversal dimensions corresponding to the dimensions of the scintillator.

	Hence, it seems that there is no need to worry about neutrons produced in the lead shielding of our neutron detectors because we do not have many photons being able to produce neutrons in the lead.		Hence, it seems that there is no need to worry about neutrons produced in the lead shielding of our neutron detectors because we do not have many photons being able to produce neutrons in the lead.

@@ Line 14: / Line 14: @@
 We have to be really careful about placing lead shielding around the beam line. Scattered photons may produce background neutrons in the lead shielding of neutron detectors.
 [[File:Modified_brem.gif | 550 px]]
 ==Neutron spectra separation==

← Older revision		Revision as of 14:58, 11 April 2011
Line 14:		Line 14:

	We have to be really careful about placing lead shielding around the beam line. Scattered photons may produce background neutrons in the lead shielding of neutron detectors.		We have to be really careful about placing lead shielding around the beam line. Scattered photons may produce background neutrons in the lead shielding of neutron detectors.
		+
		+	[[File:Modified_brem.gif \| 550 px]]

	==Neutron spectra separation==		==Neutron spectra separation==

@@ Line 13: / Line 13: @@
 [[File:Pb208_gn_xsection.jpg | 550 px]]
-We have to be really careful about placing lead shielding around the beam line. Scattered photons may produce neutrons in the lead shielding of neutron detectors.
+We have to be really careful about placing lead shielding around the beam line. Scattered photons may produce background neutrons in the lead shielding of neutron detectors.
 ==Neutron spectra separation==

← Older revision		Revision as of 14:04, 11 April 2011
Line 13:		Line 13:
	[[File:Pb208_gn_xsection.jpg \| 550 px]]		[[File:Pb208_gn_xsection.jpg \| 550 px]]

		+	We have to be really careful about placing lead shielding around the beam line.

	==Neutron spectra separation==		==Neutron spectra separation==

← Older revision		Revision as of 13:59, 11 April 2011
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	The result of GEANT4 simulation of neutron photoproduction on deuterium and oxygen-16 is presented below:		The result of GEANT4 simulation of neutron photoproduction on deuterium and oxygen-16 is presented below:

−	[[File:X_section_compare.gif \| 550 px]] [[File:Pb208_gn_xsection.jpg \| 550 px]]	+	[[File:X_section_compare.gif \| 550 px]]
		+
		+	Experimental cross section for <math>(\gamma,n)</math> reaction on Pb-208 taken from "Handbook on photonuclear data for applications. Cross-sections and spectra":
		+	[[File:Pb208_gn_xsection.jpg \| 550 px]]

← Older revision		Revision as of 13:56, 11 April 2011
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	[[File:dustin_anal.pdf]]		[[File:dustin_anal.pdf]]

−	==(\gamma,n) reaction cross sections for different elements==	+	==<math>(\gamma,n)</math> reaction cross sections for different elements==