LB SageBrushWork PostDefense - Revision history

Brenleyt: /* NAA on Sage/Se Work */

2018-11-08T17:55:23Z

NAA on Sage/Se Work

2018-11-08T17:50:07Z

Production Optimization

2018-10-16T21:12:45Z

1731 keV Analysis

2018-10-16T21:02:08Z

2242 keV Analysis

2018-10-16T21:01:44Z

1731 keV Analysis

2018-10-16T21:01:06Z

1731 keV Analysis

2018-10-16T20:53:42Z

2242 keV Analysis

2018-10-16T19:56:22Z

2242 keV Analysis

2018-10-16T19:36:03Z

2242 keV Analysis

2018-10-16T19:31:15Z

2242 keV Analysis

← Older revision		Revision as of 17:55, 8 November 2018
Line 898:		Line 898:

	=NAA on Sage/Se Work=		=NAA on Sage/Se Work=
−	To recreate the scenario for NAA, one possible reaction is Se80(N,g)Se81. This is essentially the reverse reaction from the PAA work. Note that Se-80 is more abundant than Se-82 (50% vs. 9%).	+	The neutron capture cross sections can be found here https://inis.iaea.org/collection/NCLCollectionStore/_Public/28/060/28060364.pdf
		+
		+	Selenium cross sections begin at page 76.
		+
		+	To recreate the scenario for NAA (44 MeV, 46.34 degrees off of the beam axis), one possible reaction is Se80(N,g)Se81. This is essentially the reverse reaction from the PAA work. Note that Se-80 is more abundant than Se-82 (50% vs. 9%). Unfortunately there still is a chance of producing Se-79 (325000 year half life) through a neutron capture event on Se-78 which is 24% abundant.

← Older revision		Revision as of 17:50, 8 November 2018
Line 896:		Line 896:

	The capacitive decline and the differences in half life imply that the production rate will always be higher for the sage ash.		The capacitive decline and the differences in half life imply that the production rate will always be higher for the sage ash.
		+
		+	=NAA on Sage/Se Work=
		+	To recreate the scenario for NAA, one possible reaction is Se80(N,g)Se81. This is essentially the reverse reaction from the PAA work. Note that Se-80 is more abundant than Se-82 (50% vs. 9%).

@@ Line 854: / Line 854: @@
 |-
-||Histogram||
+||Histogram|| [[File:LB SageAl 1731keV 0 3875s 9 10 18.png|200px]]
 |-
 ||Signal in Window || 3799 ||

@@ Line 833: / Line 833: @@
 ||Signal - Background || 3105.6 <math> \pm </math> 77.66 || 3057.64 <math> \pm </math> 75.93 || 2936.44 <math> \pm </math> 73.48 || 2768.32 <math> \pm </math> 71.54 || 2627.48 <math> \pm </math> 70.35 || 2459 <math> \pm </math> 68.58 || 2345.52 <math> \pm </math> 65.92 || 2280.76 <math> \pm </math> 65.92 || 2168.64 <math> \pm </math> 63.96 || 2028.52 <math> \pm </math> 61.56 || 1975.4 <math> \pm </math> 60.70 || 1881.24 <math> \pm </math> 59.05
 |-
-||Runtime (s) || 3875.66 ||  3875.66 || 3875.66 || 3875.66 || 3875.66 || 3875.66
+||Runtime (s) ||  3875.66 ||  3875.66 || 3875.66 || 3875.66 || 3875.66 || 3875.66 || 3875.66 || 3875.66 ||  3875.66 || 3875.66 || 3875.66 ||  3875.64
 |-
 ||Rate (Hz) || 0.80 <math> \pm </math> 0.02 || 0.79 <math> \pm </math> 0.02 || 0.76 <math> \pm </math> 0.02 || 0.71 <math> \pm </math> 0.02 || 0.68 <math> \pm </math> 0.02 || 0.63 <math> \pm </math> 0.02 || 0.61 <math> \pm </math> 0.02 || 0.59 <math> \pm </math> 0.02 || 0.56 <math> \pm </math> 0.02 || 0.52 <math> \pm </math> 0.02 || 0.51 <math> \pm </math> 0.02 || 0.48 <math> \pm </math> 0.02

@@ Line 862: / Line 862: @@
 ||Signal - Background ||
 |-
-||Runtime (s) || 3875.66 ||  3875.66 || 3875.66 || 3875.66 || 3875.66 || 3875.66 || 3875.66 || 3875.66 || 3875.66
+||Runtime (s) || 3875.66 ||  3875.66 || 3875.66 || 3875.66 || 3875.66 || 3875.66 || 3875.66 || 3875.66 ||  3875.66 || 3875.66 || 3875.66 ||  3875.64
 |-
 ||Rate (Hz) ||

← Older revision		Revision as of 20:53, 16 October 2018
Line 846:		Line 846:

	Slope: -1.24500e-05 +/- 6.90105e-07		Slope: -1.24500e-05 +/- 6.90105e-07
		+
		+	==1731 keV Analysis==
		+	There is a decaying line seen at 1731 keV in the Sage/Al samples from 9/10/18. The analysis was done in a 10 channel window from [1726,1736]
		+
		+	{\| border="3" cellpadding="5" cellspacing="0"
		+	\|\| \|\| 0<t<3875.66 s \|\| 3875.66<t<7751.32 s \|\| 7751.32<t<11626.98 s \|\| 11626.98<t<15502.64 s \|\| 15502.64<t<19378.3 s \|\| 19378.3<t<23253.96 s \|\| 23253.96<t<27129.62 s \|\| 27129.62<t<31005.28 s \|\| 31005.28<t<34880.94 s \|\| 34880.94<t<38756.6 s \|\| 38756.6<t<42632.26 s \|\| 42632.26<t<46507.9 s
		+
		+	\|-
		+	\|\| Histogram \|\|
		+	\|-
		+	\|\|Signal in Window \|\|
		+	\|-
		+	\|\|Integrated Background \|\|
		+	\|-
		+	\|\|Signal - Background \|\|
		+	\|-
		+	\|\|Runtime (s) \|\| 3875.66 \|\| 3875.66 \|\| 3875.66 \|\| 3875.66 \|\| 3875.66 \|\| 3875.66
		+	\|-
		+	\|\|Rate (Hz) \|\|
		+	\|-
		+	\|}

	=Production Optimization=		=Production Optimization=

@@ Line 838: / Line 838: @@
 |-
 |}
 The fit parameters are