High-resolution study of E0 internal-pair transitions from excited 0⁺ states in ⁵⁸’⁶⁰’⁶²Ni
Julkaistu sarjassa
Research report / University of Jyväskylä. Department of PhysicsTekijät
Päivämäärä
1980A new method based on a combination of an intermediate-image magnetic lens and two cooled Si(Li) detectors has been developed for in-beam studies of internal-pair transitions. Calculations of the spectrometer pair-line efficiency for EO, El, E2 and Ml transitions versus transition energy are made in the zero-order Born approximation. The main advantages gained over the previous methods used for pair-line measurements are an excellent energy resolution of the sum-coincidence pair lines (4-6 keV) and a high pair-line efficiency (s 10-3) provided by the high transmission and the broad momentum band width of the magnetic lens. With the aid of the new technique the first extensive systematic investigation of the EO transitions has been carried out in 58,60,62Ni. The present internal-pair measurements confirmed the 0+3 assignment of the 3530.9 keV state in 58Ni and the 3318.3 keV state in 60Ni, and yielded a spin and parity assignment of 0+4 for the 3588.0 keV state in 60Ni. The X(EO/E2) values are determined for these states and for the 0+2 states at 2942.3 keV, 2284.8 keV and 2048.4 keV in 58Ni, 60Ni and 62Ni, respectively. The results are combined with the available lifetimes of these states to extract the monopole strengths p2 (0+1→0+1). The results and the nature of the O+ states are discussed.
...
ISBN
978-951-39-9912-4Metadata
Näytä kaikki kuvailutiedotKokoelmat
- Väitöskirjat [3461]
Samankaltainen aineisto
Näytetään aineistoja, joilla on samankaltainen nimeke tai asiasanat.
-
Efficient, high-resolution resonance laser ionization spectroscopy using weak transitions to long-lived excited states
Groote, R. P. de; Verlinde, M.; Sonnenschein, Volker; Flanagan, K. T.; Moore, Iain (American Physical Society, 2017)Laser spectroscopic studies on minute samples of exotic radioactive nuclei require very efficient experimental techniques. In addition, high resolving powers are required to allow extraction of nuclear structure ... -
Morphological analysis of human cortical bone using high-resolution X-ray microtomography
Pirhonen, Jalmari (2012)Structural and elastic properties of bone are related to microstructural parameters such as porosity and anisotropy. Microtomography (μCT) enables assessment of bone microstructural geometry, typically down to a voxel size ... -
High-resolution mapping of the trade in tropical commodities: a tool to estimate impacts of corporate zero deforestation commitments
zu Ermgassen, Erasmus; Ayre, Ben; Meyfroidt, Patrick; West, Chris; Green, Jonathon; Javier, Godar; Toby, Gardner (Open Science Centre, University of Jyväskylä, 2018)Conservation threats in tropical landscapes are increasingly related to telecouplings, i.e. linkages between distant places such as those embodied in trade flows. Developing solutions to address these threats require novel ... -
High-resolution, accurate multiple-reflection time-of-flight mass spectrometry for short-lived, exotic nuclei of a few events in their ground and low-lying isomeric states
Andrés, Samuel Ayet San; Hornung, Christine; Ebert, Jens; Plaß, Wolfgang R.; Dickel, Timo; Geissel, Hans; Scheidenberger, Christoph; Bergmann, Julian; Greiner, Florian; Haettner, Emma; Jesch, Christian; Lippert, Wayne; Mardor, Israel; Miskun, Ivan; Patyk, Zygmunt; Pietri, Stephane; Pihktelev, Alexander; Purushothaman, Sivaji; Reiter, Moritz P.; Rink, Ann-Kathrin; Weick, Helmut; Yavor, Mikhail I.; Bagchi, Soumya; Charviakova, Volha; Constantin, Paul; Diwisch, Marcel; Finlay, Andrew; Kaur, Satbir; Knöbel, Ronja; Lang, Johannes; Mei, Bo; Moore, Iain; Otto, Jan-Hendrik; Pohjalainen, Ilkka; Prochazka, Andrej; Rappold, Christophe; Takechi, Maya; Tanaka, Yoshiki K.; Winfield, John S.; Xu, Xiaodong (American Physical Society, 2019)Mass measurements of fission and projectile fragments, produced via 238 U and 124 Xe primary beams, have been performed with the multiple-reflection time-of-flight mass spectrometer (MR-TOF-MS) of the Fragment ...
Ellei toisin mainittu, julkisesti saatavilla olevia JYX-metatietoja (poislukien tiivistelmät) saa vapaasti uudelleenkäyttää CC0-lisenssillä.