Two-proton spectroscopy in 17Ne:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Buch |
| Sprache: | English |
| Veröffentlicht: |
2001
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| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | München, Univ., Fak. für Physik, Diss., 2001 |
| Beschreibung: | IX, 118 S. graph. Darst. |
Internformat
MARC
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Datensatz im Suchindex
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| adam_text |
CONTENTS
1 INTRODUCTION AND MOTIVATION 1
1.1 TWO-PROTON DECAY: -
A NEW TWO PARTICLE DECAY. 2
1.1.1 PROTON DECAY AS A SPECTROSCOPIC TOOL. 2
1.1.2 POSTULATE OF THE TWO-PROTON DECAY. 3
1.2 CANDIDATES FOR SIMULTANEOUS 2P-DECAY. 5
1.2.1
120. 5
1.2.2
31 AR. 7
\
1.2.3 FIRST EVIDENCE FOR SIMULTANEOUS EMISSION OF
TWO PROTONS IN 18NE. 7
1.2.4
17NE: A NEW CANDIDATE FOR THE SIMULTANEOUS
TWO-PROTON DECAY?. 9
1.2.5 THE MASS OF
17NE.10
1.3 LIFETIME CALCULATIONS FOR THE 2P-DECAY.11
1.3.1 THE DIPROTON MODEL.11
1.3.2 A LIFETIME LIMIT FOR THE SIMULTANEOUS
DEMOCRATIC 2P-DECAY.11
I
BIBLIOGRAFISCHE INFORMATIONEN
HTTP://D-NB.INFO/961928565
11
CONTENTS
1.3.3 THE THREE-BODY BREAKUP MODEL .12
2 FIRST EXPERIMENTS ON THE 2P-DECAY OF
17NE 14
2.1 THE COMPETING
7-DECAY.14
2.1.1 LIFETIME OF THE COMPETING
7-DECAY.16
2.2 FIRST SEARCH FOR THE SIMULTANEOUS
2P-DECAY OF 17NE.17
2.2.1 SETUP OF THE FIRST EXPERIMENT.17
2.2.2 DATA ANALYSIS OF THE FIRST EXPERIMENT.18
2.2.3 CONCLUSIONS FROM THE FIRST EXPERIMENT.23
2.2.4 EXTRACTED LIFETIMES FROM THE EXPERIMENT.23
2.3 COMPARISON OF THE LIFETIME MODELS WITH THE FIRST EXPERIMENT . 24
3 EXPERIMENTAL SETUP AND PROCEDURE 25
3.1 PRODUCTION OF THE
17NE BEAM .25
3.1.1 THE A1200 FRAGMENT SEPARATOR.26
3.1.2 THE REACTION PRODUCT MASS SEPARATOR.28
3.2 EXPERIMENTAL SETUP.29
3.2.1 PROJECTILE IDENTIFICATION.30
3.2.2 PROJECTILE TRACKING: THE CEDC'S.30
3.2.3 THE MULTI STAGE PARTICLE TELESCOPE.31
3.3 ELECTRONICS.33
3.4 COMPARISON OF THE SETUPS.36
CONTENTS
111
3.5 EXPERIMENTAL PROCEDURE.37
3.5.1 ALIGNMENT OF THE SETUP.37
3.5.2 BEAM TUNING.37
3.5.3 CALIBRATION PROCEDURE.38
3.5.4 BEAM CURRENT AND TRIGGER RATES.39
4
DATA ANALYSIS 40
4.1 CALIBRATION .40
4.1.1 CALIBRATION OF THE CRDC'S.40
4.1.2 ENERGY CALIBRATION OF THE FRAGMENT DETECTORS.43
4.1.3 ENERGY CALIBRATION OF THE PROTON DETECTORS .44
4.1.4 DETERMINATION OF THE EXPERIMENTAL EFFICIENCY.47
4.2 IDENTIFICATION OF THE REACTION CHANNELS.50
*
4.2.1 IDENTIFICATION OF THE
17NE PROJECTILES .50
4.2.2 IDENTIFICATION OF THE
150 REACTION PRODUCTS.51
4.2.3 IDENTIFICATION OF THE EMITTED PROTONS. 53
4.2.4 IDENTIFICATION OF 2P-BANDS IN THE FIRST DSSD.57
4.3 PARTICLE TRACKING.
59
4.3.1 TRACKING WITH THE CRDC'S.59
4.3.2 BACKWARDS-TRACKING WITH THE PROTON DETECTORS .62
4.3.3 DETERMINATION OF THE BREAKUP POSITION ALONG
THE BEAM AXIS .03
IV
CONTENTS
4.3.4 COMMENT ON THE BACKTRACKING. 67
4.3.5 COMBINATION OF THE A
E
AND THE BREAKUP POSITION GATES 68
4.3.6 ANGULAR SCATTERING.70
4.4 DECAY ENERGY SPECTRUM OF
17NE.74
4.4.1 SUMMARY OF APPLIED GATES .74
4.4.2 EFFECTS OF THE REACTION POINT GATES.75
4.4.3 THE DECAY ENERGY SPECTRUM.77
4.4.4 INVESTIGATION OF THE PEAK AROUND 900 KEV.80
5 SIMULATION OF THE RESULTS 82
5.1 GENERAL DESCRIPTION OF THE PBREAK CODE.82
5.2 INGREDIENTS OF THE SIMULATION.83
5.2.1
17NE.83
5.2.2 REACTION IN THE TARGET.83
5.2.3 PARTICLE DETECTION.84
5.2.4 GENERATION OF THE SIMULATED DATA STREAM .85
5.3 SIMULATION INPUTS AND PERFORMANCE TESTS.85
5.4 EXTRACTION OF PROPERTIES FOR THE
CALCULATION OF THE CROSS SECTIONS.89
5.4.1 THE SIMULATED DECAY ENERGY SPECTRUM.89
5.4.2 DETECTION AND ANALYSIS EFFICIENCY.91
5.4.3 SIMULATION OF THE OPENING ANGLE OF THE DETECTOR
. 94
CONTENTS
V
5.4.4 EXTRACTED EXCITATION CROSS SECTIONS.95
6 EXTRACTION AND DISCUSSION OF THE RESULTS 96
6.1 LIFETIME LIMIT FOR THE SIMULTANEOUS
2P-DECAY OF THE |- STATE.96
6.2 EXTRACTION OF THE EXPERIMENTAL
J5(E2) VALUES.98
6.2.1 CALCULATION OF THE VIRTUAL PHOTON NUMBERS.99
6.2.2 EXCITATION PROCESS OF THE |
_ STATE .99
6.2.3 EXCITATION PROCESS OF THE §~ STATE .100
6.3 DISCUSSION.101
7 OUTLOOK 107
7.1 NEW GOALS FOR TWO PROTON SPECTROSCOPY EXPERIMENTS.107
7.2 FUTURE 2P-SPECTROSCOPY EXPERIMENTS.109
7.2.1 PRODUCTION MECHANISM.110
7.2.2 SETUP FOR LIFETIMES R
2P SHORTER THAN ~5 NS.110
7.2.3 SETUP FOR LIFETIMES R
2P LONGER THAN ~ 500 NS . ILL
7.2.4 CONSEQUENCES FOR THE SEARCH FOR THE
SIMULTANEOUS 2P-DECAY IN 17NE.113 |
| any_adam_object | 1 |
| author | Chromik, Marcus J. 1972- |
| author_GND | (DE-588)123034663 |
| author_facet | Chromik, Marcus J. 1972- |
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| author_sort | Chromik, Marcus J. 1972- |
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| bvnumber | BV013796884 |
| ctrlnum | (OCoLC)48720401 (DE-599)BVBBV013796884 |
| format | Book |
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| id | DE-604.BV013796884 |
| illustrated | Illustrated |
| indexdate | 2024-10-09T18:07:39Z |
| institution | BVB |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-009433296 |
| oclc_num | 48720401 |
| open_access_boolean | |
| owner | DE-19 DE-BY-UBM DE-12 |
| owner_facet | DE-19 DE-BY-UBM DE-12 |
| physical | IX, 118 S. graph. Darst. |
| publishDate | 2001 |
| publishDateSearch | 2001 |
| publishDateSort | 2001 |
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| spelling | Chromik, Marcus J. 1972- Verfasser (DE-588)123034663 aut Two-proton spectroscopy in 17Ne von Marcus J. Chromik 2001 IX, 118 S. graph. Darst. txt rdacontent n rdamedia nc rdacarrier München, Univ., Fak. für Physik, Diss., 2001 Hochschulschrift gtt Neon-17 (DE-588)4642665-6 gnd rswk-swf Protonenradioaktivität (DE-588)4296752-1 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Neon-17 (DE-588)4642665-6 s Protonenradioaktivität (DE-588)4296752-1 s DE-604 DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=009433296&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Chromik, Marcus J. 1972- Two-proton spectroscopy in 17Ne Hochschulschrift gtt Neon-17 (DE-588)4642665-6 gnd Protonenradioaktivität (DE-588)4296752-1 gnd |
| subject_GND | (DE-588)4642665-6 (DE-588)4296752-1 (DE-588)4113937-9 |
| title | Two-proton spectroscopy in 17Ne |
| title_auth | Two-proton spectroscopy in 17Ne |
| title_exact_search | Two-proton spectroscopy in 17Ne |
| title_full | Two-proton spectroscopy in 17Ne von Marcus J. Chromik |
| title_fullStr | Two-proton spectroscopy in 17Ne von Marcus J. Chromik |
| title_full_unstemmed | Two-proton spectroscopy in 17Ne von Marcus J. Chromik |
| title_short | Two-proton spectroscopy in 17Ne |
| title_sort | two proton spectroscopy in 17ne |
| topic | Hochschulschrift gtt Neon-17 (DE-588)4642665-6 gnd Protonenradioaktivität (DE-588)4296752-1 gnd |
| topic_facet | Hochschulschrift Neon-17 Protonenradioaktivität |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=009433296&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| work_keys_str_mv | AT chromikmarcusj twoprotonspectroscopyin17ne |