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A primer course of experimental particle and nuclear physics . Advanced experiment Tran Thien Thanh Tran Duy Tap. OSAKA UNIVERSITY - 2009. OUTLINE. 1. Background. 2. Experiment. 3. Discussion. 1.Background. Purpose. A life time of the first excited state of 57 Fe

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Advanced experiment Tran Thien Thanh Tran Duy Tap

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A primer course of experimental particle

and nuclear physics



Advanced experiment

Tran Thien Thanh

Tran Duy Tap

OSAKA UNIVERSITY - 2009


OUTLINE

1. Background

2. Experiment

3. Discussion


1.Background

Purpose

  • A life time of the first excited state of 57Fe

  • Calibration of time and channel relation

  • Measurement of the first excited state of 57Fe


1.Background


2. Experiment

Procedures

Stage 1: Energy calibration

Stage 2:Calibration of time – channel relation

Stage 3:Measurement of a life time of first excited state of 57Fe


Amplifier

NaI(Tl) and PMT

HV power supply

MCA

2. Experiment

  • Stage 1: Energy calibration

57Co


14,4KeV

122KeV

2. Experiment


HV

Amplifier

Delay Amp

Start

TAC

Stop

MCA

NaI(Tl)

57Co

PMT

SCA

2. Experiment

  • Stage 2: Calibration of time and channel relation

Diagram of the time – channel relation


2. Experiment

  • Stage 2: Calibration of time and channel relation


2. Experiment

  • Stage 2: Calibration of time and channel relation

A= -0,06667  0,22874

B = 0,26388  0,00074


HV - A

AMP

SCA

Discrimator

57Co

Start

TAC

Stop

MCA

AMP

SCA

Discrimator

HV - B

2. Experiment

Stage 3:Measurement of a life time of first excited state of 57Fe


2. Experiment

  • Stage 3: Measurement of a life time of first excited state of 57Fe


2. Experiment

  • Stage 3: Measurement of a life time of first excited state of 57Fe

A= 2,19815  0,02432

B = -0,02734  0,00020


3. Discussion

Reference T1/2r = 98ns


Thank a lot for your attention!

Wellcome to HCM City


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