MARAGAS · Investigation of proton-rich nuclei using novel techniques
7РП — „Хора“ (Действия „Мария Кюри“)
- Период
- 2015-02-01 → 2017-01-31
- Финансиране от ЕС
- 199 016 €
- Участници
- 1
- Схема
- MC-IEF
Линиите свързват координатора с партньорите.
Накратко на български
Ядрата на тежките атоми с излишък от протони, като тези около калция-100, се анализират чрез нови методи за отделяне и засичане. Това помага да се разбере взаимодействието между протони и неутрони, както и как се създават елементите в звездите.
Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.
Резултати накратко
Investigation of proton-rich nuclei using novel techniques
The study of heavy proton-rich nuclei offers the opportunity to investigate a plethora of physics such as the interaction between protons and neutrons, the coexistence of multiple nuclear shapes in the same nuclear isotope, nuclear structure properties at the extremes and the production of elements in the stellar environment. The MARAgas project was focused on the study of proton rich nuclei in the vicinity of 100Sn employing the MARA vacuum-mode recoil separator and the development of novel experimental equipment to allow the study of hitherto inaccessible nuclei in the same region. The MARA separator has been commissioned successfully during 2015 and 2016 using several nuclear reactions. MARA is a unique separator designed and developed in-house at the Accelerator Laboratory of the University of Jyväskylä. The separator is combined with a focal plane detector system which allows the detection and study of fusion evaporation reaction products and their subsequent decays. Both the separator and detector system were extensively tested during these two years and were made available for experimental exploitation during the end of 2016. The MARAgas project aimed to develop a gas cell to be used for stopping, thermalising and neutralising the reaction products which reached the focal plane of MARA. Upon extraction from the gas cell, the products will be selectively ionised using resonant laser ionisation before being further mass separated and transported to the detector stations. The different steps taken from ion production at the target position of MARA to detection at the experimental stations are shown in the attached figure. The MARAgas project did not include the stages after the gas cell, however, their design and development started in parallel with the gas cell development. Currently the gas cell is in the manufacturing stage and the laser system to be used for laser ionisation and spectroscopy is in the final development stage. Simulations and design of the ion guides is ongoing and a magnetic dipole to provide further mass separation will soon be ordered. The developments and achievements of the MARAgas project form the basis of the MARA Low-Energy Branch (MARA-LEB). The MARA-LEB facility includes not only the gas cell but all the necessary equipment to allow for laser ionisation and spectroscopy, ion transport, mass separation, and detection. The completion of the MARA-LEB facility is anticipated in the next few years and will open the way to the study of currently unreachable nuclei, which will provide a direct inside to exotic nuclear properties. Project website: https://www.jyu.fi/fysiikka/en/research/accelerator/nucspec/maralowenergy/mara-leb Contact details: philippos.papadakis@jyu.fi
Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз
Цел на проекта
Proton rich nuclei with N≈Z and masses close to A=100 are excellent for the investication of neutron-proton interactions and neutron-proton pairing and may provide insight to some of the most interesting and exciting topics in nuclear physics. Heavy N≈Z nuclei are also of astrophysical interest mainly in the study of the rapid proton capture (rp) process. From the viewpoint of fundamental physics precision measurements of super-allowed 0+ to 0+ β-decays in the N≈Z nuclei can test the standard model of the weak interaction.This project concentrates on the study of nuclei close to the N=Z line in the region of 100Sn. These studies will provide information on nuclear structure, test nuclear mass models, study exotic modes of decay and collect information about the astrophysical rp-process. The proposed Fellow will take a leading role in the development of experimental tools that will be used to study N≈Z nuclei and will consequently use these apparatuses in selected physics cases.The research objectives of the proposed project will be divided into two main parts:1) Study of nuclei in the vicinity of doubly magic 100Sn employing the MARA vacuum-mode recoil separator, and2) Design, manufacture and commissioning of a gas cell to be incorporated at the focal plane of MARA.The proposed project will be carried out in JYFL and will offer the Fellow the opportunity to broaden his physics knowledge and expertise and enhance his project and people management skills. He will be in charge of the project through all its stages and will be a leading member of a European collaboration concentrating on studies employing gas cells at the focal plane of recoil separators.At the completion of this project the proposed Fellow will be a prime candidate for long-term positions both in academia and in industry. This project will help the European research community to stay in the forefront of research and experimental technology and techniques.
Оригинален текст от CORDIS (на английски).
Участници
- JYVASKYLAN YLIOPISTO · JyvaskylaКоординаторФинландия
Връзки
Данни: CORDIS, © Европейски съюз