Nuclear Spin-Parity Assignments (eBook)

Proceedings of the Conference on Bases for Nuclear Spin-Parity Assignments, Gatlinburg, Tennessee, November 11-13, 1965

Norwood B. Gove (Herausgeber)

eBook Download: PDF

2013 | 1. Auflage
476 Seiten
Elsevier Science (Verlag)
978-1-4832-6635-0 (ISBN)

Infos

Nuclear Spin-Parity Assignments covers the proceedings of the Bases for Nuclear Spin-Parity Assignments conference held in Gatlinburg, Tennessee on November 11-13, 1965. The book focuses on methods for deducing spins and parities of low-lying nuclear states. The selection first offers information on the criteria for spin-parity assignments and direct measurements of spins of radioactive nuclei. Discussions focus on microwave spectroscopy method, paramagnetic resonance method, optical spectroscopic method, and nuclear magnetic resonance technique. The book also elaborates on absolute conversion coefficient measurements for spin and parity assignments; coincidence arrangement for nuclear lifetime measurements using fast gas-filled counters; and beta and gamma transition probabilities. The text ponders on particle angular correlations following nuclear reactions; gamma-ray angular correlations following nuclear reactions; and spin determinations through triple angular correlation measurements. The manuscript also examines Coulomb excitation; nuclear isomer excitation by low-energy electrons and x rays; and analysis of inelastic scattering by adiabatic approximation. The selection is highly recommended for readers interested in nuclear spin-parity assignments.

Inhalt

Front Cover 1
Nuclear Spin-Parity Assignments 4
Copyright Page 5
Table of Contents 8
PREFACE 6
CHAPTER 1. CRITERIA FOR SPIN-PARITY ASSIGNMENTS 14
DISCUSSION 17
CHAPTER 2. DIRECT MEASUREMENTS OF SPINS OF RADIOACTIVE NUCLEI 18
Introduction 18
The Nuclear Magnetic Resonance Technique 21
The Microwave Spectroscopy Method 24
The Paramagnetic Resonance Method 25
The Optical Spectroscopic Method 29
The Atomic-Beam Magnetic-Resonance Method 33
The Problem of Zero-Spin Isotopes 39
Conclusions 40
References 41
DISCUSSION 42
CHAPTER 3. ABSOLUTE CONVERSION COEFFICIENT MEASUREMENTS FOR SPIN AND PARITY ASSIGNMENTS 44
1. Introduction 44
2. Experimental Techniques of Measuring Conversion Coefficients and Applications 46
3. Electron-Gamma, Directional Correlation Techniques 57
Acknowledgements 61
References 61
DISCUSSION 63
CHAPTER 4. SPIN-PARITY ASSIGNMENTS FROM L-SUBSHELL RATIOS AND K/L RATIOS 66
Introduction 66
Applications of the L-Subshell Method 72
Critical Tests of L-Subshell Ratios 75
Conclusion 89
References 92
DISCUSSION 95
CHAPTER 5. BETA AND GAMMA TRANSITION PROBABILITIES 96
References 114
DISCUSSION 116
CHAPTER 6. N-SUBSHELL RATIOS AND VERY LOW-LYING STATES 117
Introduction 117
Properties of the Rotational Levels 117
Theoretical Model 118
Numerical Results 119
CHAPTER 7. aK MEASUREMENTS FOR USE AS STANDARDS IN THE ENERGY RANGE 800 TO 1200 kev 121
CHAPTER 8. A COINCIDENCE ARRANGEMENT FOR NUCLEAR LIFETIME MEASUREMENTS USING FAST GAS-FILLED COUNTERS 123
CHAPTER 9. ON POSSIBLE M1-M3 MULTIPOLE MIXTURES 125
CHAPTER 10. ANGULAR CORRELATIONS OF INTERNAL PAIRS 127
I. Introduction 127
II. The Brookhaven Spectrometer 131
III. The Multipole Meter 136
IV. Critique and Future Applications 153
References 156
DISCUSSION 158
CHAPTER 11. PARTICLE ANGULAR CORRELATIONS FOLLOWING NUCLEAR REACTIONS 159
Introduction 159
Parity Natural or Unnatural 159
High Spin Feeding 162
Alpha-Alpha Angular Correlations 166
Extension of the Method 170
References 173
DISCUSSION 174
CHAPTER 12. GAMMA-RAY ANGULAR CORRELATIONS FOLLOWING NUCLEAR REACTIONS 175
A. A Gamma Ray Detector Array 177
B. Correlation Measurements with a Ge(Li) Detector 183
References 186
DISCUSSION 188
CHAPTER 13. STUDY OF THE LOW-LYING STATES OF 23Na BY MEANS OF THE 26Mg(p,a.)23Na REACTION 189
DISCUSSION 191
CHAPTER 14. EVIDENCE FOR A DOUBLET AT 5.96 Mev IN 10Be1 192
DISCUSSION 195
CHAPTER 15. SPIN ASSIGNMENTS IN 33S FROM THE REACTION 32s(d,p.)33S1 196
The 3.224 State 196
The 2.937 State 197
The 2.313 State 197
The 1.965 State 197
DISCUSSION 198
CHAPTER 16. SPIN DETERMINATIONS THROUGH TRIPLE ANGULAR CORRELATION MEASUREMENTS1 199
DISCUSSION 200
CHAPTER 17. SPIN ASSIGNMENTS TO LEVELS IN 131l 201
Measurements and Results 202
Conclusions 203
CHAPTER 18. THE g FACTOR AND THE POSSIBLE CONFIGURATION OF THE 1829-kev LEVEL OF 131I 204
CHAPTER 19. NEW SPIN AND MIXING RATIO DETERMINATIONS FOR THREE LEVELS IN 60Ni 206
DISCUSSION 210
CHAPTER 20. ANALYSIS OF DOUBLY MIXED .-. CASCADES BY USE OF POLARIZATION-DIRECTION AND DIRECTIONAL CORRELATIONS: DECAY OF 5-yr 101Rh1 211
CHAPTER 21. VERIFICATION OF THE PARITY OF THE 2.21-Mev LEVEL OF 27Al1 214
DISCUSSION 217
CHAPTER 22. COULOMB EXCITATION 218
DISCUSSION 233
CHAPTER 23. COULOMB EXCITATION OF STATES IN THE CHROMIUM NUCLEI1 235
CHAPTER 24. INFORMATION ON SPINS AND PARITIES OF NUCLEAR LEVELS FRCM INELASTIC ELECTRON SCATTERING 238
Introduction 238
Treatment in the Born Approximation 239
Mixed Multipole Transitions 245
References 247
DISCUSSION 247
CHAPTER 25. NUCLEAR ISOMER EXCITATION BY LOW-ENERGY ELECTRONS AND X RAYS 249
DISCUSSION 250
CHAPTER 26. EXCITATION AND DISINTEGRATION OF NUCLEI BY LOW-ENERGY ELECTRONS AND X-RAYS 251
References 256
CHAPTER 27. GAMMA-RAY ANGULAR DISTRIBUTIONS IN INELASTIC NUCLEON SCATTERING VIA COMPOUND NUCLEUS MECHANISM 257
Introduction 257
Theory 258
Spin Dependence of Ground-State Transitions 261
Limiting (.,.'.) Angular Distributions 262
Influence of .-Cascades from Higher Levels 278
Final Remarks 278
Acknowledgment 280
References 280
DISCUSSION 282
CHAPTER 28. 2J+1 DEPENDENCE OF THE TOTAL CROSS SECTION IN NUCLEAR REACTIONS 284
Introduction 284
Direct Reactions 285
Statistical Compound Nucleus 287
Lithium Induced Reactions in General 293
Lithium + Boron Reactions 296
Lithium + Beryllium Reaction 304
Conclusion 304
REFERENCES 306
DISCUSSION 308
CHAPTER 29. HAUSER-FESHBACH CALCULATIONS FOR 131ln(n,n')113mIn1 310
DISCUSSION 311
CHAPTER 30. GAMMA RAY ANGULAR DISTRIBUTIONS IN (.,.'.) REACTIONS AS A 
314 
DISCUSSION 316
CHAPTER 31. SPIN ASSIGNMENTS IN 35C1 AND 37C1 VIA (.,..) REACTIONS1 317
CHAPTER 32. SPINS OF 58Ni LEVELS FROM INELASTIC PROTON SCATTERING1 319
CHAPTER 33. SPINS OF LEVELS IN 41Sc1 322
CHAPTER 34. INELASTIC SCATTERING AND THE DISTORTED WAVE METHOD 326
References 338
DISCUSSION 338
CHAPTER 35. ANALYSIS OF INELASTIC SCATTERING BY THE ADIABATIC APPROXIMATION 340
References 360
DISCUSSION 362
CHAPTER 36. ANGULAR DISTRIBUTIONS FROM (d,d) REACTIONS ON 1f 7/2 SHELL NUCLEI AT 7.50-Mev BOMBARDING ENERGY1 363
CHAPTER 37. NUCLEAR STRUCTURE OF 14N1 367
DISCUSSION 371
CHAPTER 38. SPIN-PARITY ASSIGNMENTS FROM ANGULAR DISTRIBUTION MEASUREMENTS ON Sm(r,p) REACTIONS 373
DISCUSSION 376
CHAPTER 39. USE OF SUM RULES FOR SPIN DETERMINATION IN STRIPPING AND PICK–UP REACTIONS 378
DISCUSSION 394
CHAPTER 40. J DEPENDENCE OF ANGULAR DISTRIBUTIONS 397
References 416
DISCUSSION 417
CHAPTER 41. SPIN AND PARITY ASSIGNMENTS BY INELASTIC ALPHA SCATTERING 419
CHAPTER 42. SPINS, PARITIES, AND COLLECTIVE PARAMETERS OBTAINED BY INELASTIC ALPHA SCATTERING FOR NUCLEI AROUND N = 28 421
CHAPTER 43. THE NUCLEAR SHELL MODEL–COMPARISON OF CALCULATIONS AND EXPERIMENTS 424
I. The Shell Model—Its Aims and Practical Limitations 424
IL Energy-Level Fits the Ability of Effective Interactions to Absorb Huge Configuration Impurities
III. States, Excitations and the Shell Model 428
IV. The Shell-Model Description of Excitations in Heavy-Enough Nuclei (A > 40)
V. Evidence Concerning Configuration Purity from Calculations with Realistic Forces for Heavy-Enough Nuclei 432
VI. Light Nuclei (A < 40)
VII. Conclusions 435
REFERENCES 437
DISCUSSION 438
CHAPTER 44. THE COLLECTIVE MODEL 442
References 453
DISCUSSION 454
CHAPTER 45. VIBRATIONAL STATES OF .DD-. DEFORMED NUCLEI IN THE RARE EARTH REGION1 455
DISCUSSION 457
CHAPTER 46. ELECTRIC MONOPOLE NUCLEAR STRENGTH PARAMETERS AND THE IDENTIFICATION OF BETA BANDS IN EVEN NUCLEI 459
CHAPTER 47. (d,p) AND (d,t) STUDIES OF THE STRUCTURE OF Yb ISOTOPES 463
DISCUSSION 465
CHAPTER 48. STATIC QUADRUPOLE MOMENT OF THE FIRST 2 + STATE IN VIBRATIONAL NUCLEI 466
DISCUSSION 468
LIST OF PARTICIPANTS AND AUTHORS 470

Produkt-Details

• Erscheint lt. Verlag: 22.10.2013
• Sprache: englisch
• Themenwelt: Naturwissenschaften ► Physik / Astronomie ► Quantenphysik
• Themenwelt: Technik
• ISBN-10: 1-4832-6635-4 / 1483266354
• ISBN-13: 978-1-4832-6635-0 / 9781483266350