Forest NucPhys I - Revision history

Foretony: /* Weak Interactions */

2015-12-18T01:07:01Z

Weak Interactions

2015-12-18T01:05:10Z

Weak Interactions

2015-12-18T01:01:21Z

Weak Interactions

2015-12-18T00:53:23Z

Weak Interactions

2015-12-18T00:52:58Z

Weak Interactions

2015-12-18T00:44:48Z

Weak Interactions

2015-12-18T00:32:47Z

Weak Interactions

2015-12-18T00:31:44Z

Weak Interactions

2015-12-18T00:31:34Z

Weak Interactions

2015-12-18T00:31:09Z

Weak Interactions

@@ Line 271: / Line 271: @@
 :<math>= 0.00162 931.502 \frac{\mbox{MeV}}{\mbox {u}} = 1.505 MeV</math>
-A reaction to the ground state of potassium is forbidden in this charged current electron neutrino reaction resulting in one or more gammas being emitted  as the Potassium nucleus de-excited to the ground state.  There are at most 100 excited states.
+A reaction to the ground state of potassium is forbidden in this charged current electron neutrino reaction resulting in one or more gammas being emitted  as the Potassium nucleus de-excited to the ground state.  There are about 98 observed excited states of the K-40 nucleus.
 Detecting this signal in DUNE means you need to see and electron and at least one gamma in coincidence.

@@ Line 271: / Line 271: @@
 :<math>= 0.00162 931.502 \frac{\mbox{MeV}}{\mbox {u}} = 1.505 MeV</math>
-A reaction to the ground state of potassium is forbidden in this charged current electron neutrino reaction resulting in one or more gammas being emitted  as the Potassium nucleus de-excited to the ground state.
+A reaction to the ground state of potassium is forbidden in this charged current electron neutrino reaction resulting in one or more gammas being emitted  as the Potassium nucleus de-excited to the ground state.  There are at most 100 excited states.
 Detecting this signal in DUNE means you need to see and electron and at least one gamma in coincidence.

@@ Line 265: / Line 265: @@
 :<math>\nu_e + {40 \atop 18 }Ar_{22} \rightarrow {40 \atop 19 }K^*_{21} + e^- </math>
-The energy needed for this reaction assuming the electron has not final kinetic energy is
+The min neutrino energy needed for this reaction assuming the electron energy is ignorable:
 :<math>\Delta M = \left [ m\left({40 \atop 19 }K\right)- m\left({40 \atop 18 }Ar\right) \right] c^2 </math>

@@ Line 271: / Line 271: @@
 :<math>= 0.00162 931.502 \frac{\mbox{MeV}}{\mbox {u}} = 1.505 MeV</math>
-A reaction to the ground state of potassium is forbidden in this CC electron neutrino reaction resulting in one or more gammas being emitted  as the Potassium nucleus de-excited to the ground state.
+A reaction to the ground state of potassium is forbidden in this charged current electron neutrino reaction resulting in one or more gammas being emitted  as the Potassium nucleus de-excited to the ground state.
 Detecting this signal in DUNE means you need to see and electron and at least one gamma in coincidence.

@@ Line 263: / Line 263: @@
 Neutrino
-:<math>\nu + {40 \atop 18 }Ar_{22} \rightarrow {40 \atop 19 }K_{21} + e^- </math>
+:<math>\nu_e + {40 \atop 18 }Ar_{22} \rightarrow {40 \atop 19 }K^*_{21} + e^- </math>
 The energy needed for this reaction assuming the electron has not final kinetic energy is
@@ Line 271: / Line 271: @@
 :<math>= 0.00162 931.502 \frac{\mbox{MeV}}{\mbox {u}} = 1.505 MeV</math>
 Potassium 40 decay

@@ Line 262: / Line 262: @@
 Neutrino
 Potassium 40 decay
@@ Line 287: / Line 289: @@
 Argon-39 decay:
-:<math>{39 \atop 18 }Ar_{21} \rightarrow {39 \atop 19 }K_{20} + e^- + \nu</math>
+:<math>{39 \atop 18 }Ar_{21} \rightarrow {39 \atop 19 }K_{20} + e^- + \bar{\nu}</math>
 =Strong Interaction=

@@ Line 274: / Line 274: @@
 .001% of the time
-<math>{40 \atop 19 }K_{21} \rightarrow {40 \atop 20 }Ca_{20} + e^+ + \nu</math>
+:<math>{40 \atop 19 }K_{21} \rightarrow {40 \atop 20 }Ca_{20} + e^+ + \nu</math>
 Potassium has half life of <math>1.251×10^9</math> years.

← Older revision		Revision as of 00:31, 18 December 2015
Line 283:		Line 283:
	Argon-39 decay:		Argon-39 decay:

		+	<math>{39 \atop 18 }Ar_{21} \rightarrow {39 \atop 19 }K_{20} + e^- + \nu</math>

	Argon-36,38,40 are stable.		Argon-36,38,40 are stable.