ISU Coloq 11-3-2014 - Revision history

Foretony: /* Definition of Missing Mass */

2014-11-03T01:52:56Z

Definition of Missing Mass

2014-11-03T01:46:47Z

Definition of Missing Mass

2014-11-03T01:25:34Z

Definition of Missing Mass

2014-11-03T00:33:33Z

Y-88

2014-11-03T00:27:11Z

Ba-133

2014-11-03T00:22:29Z

Ba-133

2014-11-03T00:17:55Z

Ba-133

2014-11-03T00:17:44Z

Ba-133

2014-11-03T00:17:34Z

Ba-133

2014-11-03T00:15:25Z

CPAA

← Older revision		Revision as of 01:52, 3 November 2014
Line 130:		Line 130:

	[[File:CLAS_InelasticSpectrum_2012.png \| 200 px]]		[[File:CLAS_InelasticSpectrum_2012.png \| 200 px]]
		+
		+	Get picture from Figure 1.3 on pg 13 to show how cross section changes with Q^2
		+
		+	http://arxiv.org/pdf/0812.2144.pdf
		+

	F1 for several Q^2 to show how it smooths out		F1 for several Q^2 to show how it smooths out

← Older revision		Revision as of 01:46, 3 November 2014
Line 134:		Line 134:

	http://www.jlab.org/Hall-B/secure/eg1/Models/InclusiveModels.html		http://www.jlab.org/Hall-B/secure/eg1/Models/InclusiveModels.html
		+
		+	DIS scattering theory
		+
		+
		+	http://www.physics.umd.edu/courses/Phys741/xji/chapter4.pdf

	===The Delta Resonance===		===The Delta Resonance===

← Older revision		Revision as of 01:25, 3 November 2014
Line 130:		Line 130:

	[[File:CLAS_InelasticSpectrum_2012.png \| 200 px]]		[[File:CLAS_InelasticSpectrum_2012.png \| 200 px]]
		+
		+	F1 for several Q^2 to show how it smooths out
		+
		+	http://www.jlab.org/Hall-B/secure/eg1/Models/InclusiveModels.html

	===The Delta Resonance===		===The Delta Resonance===

← Older revision		Revision as of 00:33, 3 November 2014
Line 313:		Line 313:

	==== Y-88====		==== Y-88====
		+
		+
		+	{\| border="1" \|cellpadding="20" cellspacing="0
		+	\|-
		+	\| Energy (keV) \|\| Relative Intensity
		+	\|-
		+	\| 850.6 \|\| 0.065
		+	\|-
		+	\|'''898.042''' \|\| 93.7
		+	\|-
		+	\| 1382.2 \|\| 0.021
		+	\|-
		+	\| '''1836.063 ''' \|\| 99.2
		+	\|-
		+	\| 2734.0 \|\| 0.71
		+	\|-
		+	\| 3219.7 \|\| 0.0070
		+	\|}
		+
		+
	[[File:Run7023_Y88_scaled.png \| 400 px]] [[File:Run7023_OverlayCoin_Cuts_log.png \| 400 px]]		[[File:Run7023_Y88_scaled.png \| 400 px]] [[File:Run7023_OverlayCoin_Cuts_log.png \| 400 px]]

@@ Line 277: / Line 277: @@
 [[File:Ba-133_ecapture.png | 600 px]]
-Ba-133 undergoes electron capture to Cs-133.  86% of the time it ends up in the 1/2+ , 437 keV excited state of Cs-133.
+Ba-133 undergoes electron capture to Cs-133.  86% of the time it ends up in the 1/2+ , 437 keV excited state of Cs-133.  The 437 state emmits a 356 keV photon as it transitions to the 81 keV state on its way to the ground state.  We see photons of energy 81 keV and 356 keV in coincidence as the lifetime in the 81 keV state is so short.
 {| border="1"  |cellpadding="20" cellspacing="0

← Older revision		Revision as of 00:22, 3 November 2014
Line 276:		Line 276:

	[[File:Ba-133_ecapture.png \| 600 px]]		[[File:Ba-133_ecapture.png \| 600 px]]
		+
		+	Ba-133 undergoes electron capture to Cs-133. 86% of the time it ends up in the 1/2+ , 437 keV excited state of Cs-133.
		+
		+	{\| border="1" \|cellpadding="20" cellspacing="0
		+	\|-
		+	\| Energy(keV) \|\| Intensity(rel)
		+	\|-
		+	\| 53.1625( 6) \|\|2.199(22)
		+	\|-
		+	\| 79.6139(13) \|\| 2.62( 6)
		+	\|-
		+	\| '''80.9971(12)''' \|\| 34.06(27)
		+	\|-
		+	\| 160.6109(17) \|\| 0.645( 8)
		+	\|-
		+	\| 223.2373(14) \|\| 0.450( 4)
		+	\|-
		+	\| 276.3997(13) \|\| 7.164(22)
		+	\|-
		+	\| 302.8510( 6) \|\| 18.33( 6)
		+	\|-
		+	\| ''' 356.0134( 6)''' \|\| 62.05(19)
		+	\|-
		+	\| 383.8480(12) \|\| 8.94( 3)
		+	\|-
		+	\|}
		+
		+
		+
		+	The 81 keV and 356 keV lines are the strongest and, when they occur in coincidence, they represent the transition from the 436 keV excited state of Cs-133 to the 81 keV excited state and then the ground state.
		+
		+	If I put a cut on the strongest line (356 keV) observed by Det B and ask what photon energies are observed in coincidence (timing window of 53 ns) with the other HpGe detector (Detector 180-2) I see the spectrum
		+
		+
	[[File:R5716_356CoinOverlay.png \| 400 px]]		[[File:R5716_356CoinOverlay.png \| 400 px]]

@@ Line 275: / Line 275: @@
 ====Ba-133====
-[[File:Ba-133_ecapture.png | 800 px]]
+[[File:Ba-133_ecapture.png | 600 px]]
 [[File:R5716_356CoinOverlay.png | 400 px]]

@@ Line 275: / Line 275: @@
 ====Ba-133====
-[[File:R5716_356CoinOverlay.png | 200 px]]
+[[File:Ba-133_ecapture.png | 200 px]]
 ==== Y-88====

← Older revision		Revision as of 00:15, 3 November 2014
Line 273:		Line 273:
	[[File:TDC7023_1.png \| 400 px]]		[[File:TDC7023_1.png \| 400 px]]

		+	====Ba-133====

		+	[[File:R5716_356CoinOverlay.png \| 200 px]]
		+
		+	==== Y-88====
	[[File:Run7023_Y88_scaled.png \| 400 px]] [[File:Run7023_OverlayCoin_Cuts_log.png \| 400 px]]		[[File:Run7023_Y88_scaled.png \| 400 px]] [[File:Run7023_OverlayCoin_Cuts_log.png \| 400 px]]