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| DOI | 10.2172/6989994 |
| 报告编号 | DOE/ER/40609-2 |
| 来源ID | OSTI_ID: 6989994 |
| [Experimental nuclear physics]. [Physics Dept. , Yale Univ] | |
| [unavailable] | |
| 英文摘要 | An earlier study of unusual electromagnetic decays in [sup 86]Zr was extended in order to make comparisons with its isotone [sup 84]Sr and with [sup 84]Zr. The K=14 (t [sub [1/2]] = 70 ns) high-spin isomer in [sup 176]W was found to have a 13% branch directly to the K=O ground-state band, one of the strongest violations of K-selection rules known. A new program to search for a predicted region of oblate deformation involving neutron deficient isotopes in the Rn/Fr/Ra region was begun. In the area of nuclear astrophysics, as part of a study of the onset of the rp-Process, a set of measurements searching for possible new resonances for [sup 14]O+[alpha] and [sup 17]F+p reactions was completed and a coincidence experiment measuring the [sup 19]F([sup 3]He,t)[sup 19]Ne([alpha])[sup 15]O and [sup 19]F([sup 3]He,t)[sup 19]Ne(p)[sup 18]F reactions in order to determine the rates of the [sup 18]F(p,[alpha])[sup 15]O and [sup 18]F(p,[gamma])[sup 19]Ne reactions was begun. Experimental measurements of [beta]n[alpha] coincidences from the [sup 15]N(d,p)[sup 16]N([beta][sup [minus]][nu])[sup 16]O([alpha])[sup 12]C reaction have also been completed and are currently being analyzed to determine the rate of the [sup 12]C([alpha],[gamma]) reaction. In the APEX collaboration, we have completed the assembly and testing of two position-sensitive Na barrels which surround the axial silicon detector arrays and serve as the e[sup +] triggers by detecting their back-to-back annihilation quanta were completed. The HI AGS and RHIC collaborations, construction and implementation activities associated with the space-time-tracker detector and in the design of the central detector for the PHENIX experiment were carried out. Operation of the ESTU tandem accelerator has been reliable, delivering beam on target at terminal voltages as high as 19.3 MV and running for as long as 143 days between tank openings. Fabrication and bench testing of a new negative ion source system have been completed. |
| 出版年 | 1992 |
| 报告类型 | Technical Report |
| 语种 | 英语 |
| 国家 | 美国 |
| 来源学科分类 | 73 NUCLEAR PHYSICS AND RADIATION PHYSICS ; 43 PARTICLE ACCELERATORS ; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY ; NUCLEAR STRUCTURE ; RESEARCH PROGRAMS ; TANDEM ELECTROSTATIC ACCELERATORS ; ENERGY LEVELS ; IONIZATION CHAMBERS ; NEON 18 ; PROGRESS REPORT ; RESONANCE ; TUNGSTEN 176 ; ZIRCONIUM 86 ; ACCELERATORS ; BETA DECAY RADIOISOTOPES ; BETA-PLUS DECAY RADIOISOTOPES ; DOCUMENT TYPES ; ELECTRON CAPTURE RADIOISOTOPES ; ELECTROSTATIC ACCELERATORS ; EVEN-EVEN NUCLEI ; HOURS LIVING RADIOISOTOPES ; INTERMEDIATE MASS NUCLEI ; INTERNAL CONVERSION RADIOISOTOPES ; ISOTOPES ; LIGHT NUCLEI ; MEASURING INSTRUMENTS ; NEON ISOTOPES ; NUCLEI ; RADIATION DETECTORS ; RADIOISOTOPES ; SECONDS LIVING RADIOISOTOPES ; TUNGSTEN ISOTOPES ; ZIRCONIUM ISOTOPES 663110* -- General & Average Properties of Nuclei & Nuclear Energy Levels-- (1992-) ; 663430 -- Nucleon-Induced Reactions & Scattering-- (1992-) ; 663440 -- D-, T-, & He-induced Reactions & Scattering-- (1992-) ; 663550 -- Nuclear Mass Ranges-- A=59-89-- (1992-) ; 663520 -- Nuclear Mass Ranges-- A=6-19-- (1992-) ; 430301 -- Particle Accelerators-- Ion Sources ; 440103 -- Radiation Instrumentation-- Nuclear Spectroscopic Instrumentation |
| URL | http://www.osti.gov/scitech/servlets/purl/6989994 |
| 资源类型 | 科技报告 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/260304 |
| 推荐引用方式 GB/T 7714 | [unavailable]. [Experimental nuclear physics]. [Physics Dept. , Yale Univ],1992. |
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