DU Run - Revision history

Kosiolek at 17:11, 2 November 2012

2012-11-02T17:11:18Z

2012-11-02T17:10:19Z

2012-11-02T17:05:39Z

2012-11-02T17:01:20Z

2012-11-02T17:00:07Z

2012-11-02T16:59:30Z

2012-11-02T16:34:04Z

2012-11-02T16:29:13Z

2012-11-02T16:12:14Z

2012-11-02T16:01:58Z

← Older revision		Revision as of 17:11, 2 November 2012
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	The uncertainties on the <math>\theta</math> angle are determined by the width of the TDC difference spectra. Should be discussed.		The uncertainties on the <math>\theta</math> angle are determined by the width of the TDC difference spectra. Should be discussed.
		+
		+	==2n opening angle after taking into account the z-coordinate==

	The 2n opening angle after taking in th account the z-coordinate of the vertex and timing cuts including both neutron area and photon region:		The 2n opening angle after taking in th account the z-coordinate of the vertex and timing cuts including both neutron area and photon region:

← Older revision		Revision as of 17:10, 2 November 2012
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	[[File:2n_opening_angle_zcomp_nArea2.png]]		[[File:2n_opening_angle_zcomp_nArea2.png]]

		+	==Simulation of neutron angular distribution after the deuteron photodisintegration==
	Spherical coordinates [Weisstein, Eric W. "Spherical Coordinates." From MathWorld--A Wolfram Web Resource. http://mathworld.wolfram.com/SphericalCoordinates.html ]:		Spherical coordinates [Weisstein, Eric W. "Spherical Coordinates." From MathWorld--A Wolfram Web Resource. http://mathworld.wolfram.com/SphericalCoordinates.html ]:

@@ Line 104: / Line 104: @@
 <math>\frac{\sigma_m}{\sigma_e} = 0.61 \pm 0.04</math>, hence, <math>\frac{a}{b} = 0.41 \pm 0.04</math>
-So the <math>\theta</math> distribution of neutrons should look like:
+So the <math>\phi</math> distribution of neutrons (in the coordinate system described above) should look like:
 [[File:theory_neut_distr.png | 400 px]]

@@ Line 102: / Line 102: @@
 [[File:cutout.png]]
-<math>\frac{\sigma_m}{\sigma_e} = 0.61 \pm 0.04</math>
+<math>\frac{\sigma_m}{\sigma_e} = 0.61 \pm 0.04</math>, hence, <math>\frac{a}{b} = 0.41 \pm 0.04</math>
 So the <math>\theta</math> distribution of neutrons should look like:
 [[File:theory_neut_distr.png | 400 px]]

← Older revision		Revision as of 17:00, 2 November 2012
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	So the <math>\theta</math> distribution of neutrons should look like:		So the <math>\theta</math> distribution of neutrons should look like:

−	[[File:theory_neut_distr.png]]	+	[[File:theory_neut_distr.png \| 400 px]]

← Older revision		Revision as of 16:59, 2 November 2012
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	<math>\frac{\sigma_m}{\sigma_e} = 0.61 \pm 0.04</math>		<math>\frac{\sigma_m}{\sigma_e} = 0.61 \pm 0.04</math>
		+
		+	So the <math>\theta</math> distribution of neutrons should look like:
		+
		+	[[File:theory_neut_distr.png]]

← Older revision		Revision as of 16:34, 2 November 2012
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	[[File:cutout.png]]		[[File:cutout.png]]
		+
		+	<math>\frac{\sigma_m}{\sigma_e} = 0.61 \pm 0.04</math>

@@ Line 88: / Line 88: @@
 [[File:Sperical_coordinates_plot.gif]]
-The simulation of neutron angular distribution has been done using D2 sphere of diameter 6 cm and monoenergetic 5 MeV photn beam (<math>10^6</math> photons) going along the z-axis. The neutrons were observed outside of the sphere. The physics for neutron interaction with the matter was off to prevent the material of the target to obscure the angular distribution.
+The simulation of neutron angular distribution has been done using D2 sphere of diameter 6 cm and monoenergetic 5 MeV photn beam (<math>10^6</math> photons) going along the z-axis. The neutrons were observed outside of the sphere. The physics for neutron interaction with the matter was off to prevent the material of the target to obscure the angular distribution. Physics of photonuclear reactions was on.
 In these coordinates the neutron angular distribution looks like: