Nuclear Physics Rolling Grant

Lead Research Organisation: University of Liverpool
Department Name: Physics

Abstract

The majority of the mass of the universe is made up of atomic nuclei that lie at the centre of the atom. The fundamental questions in nuclear physics are, 'What are the limits of nuclear existence?'; 'What are the heaviest nuclei that can be made in the laboratory?'; 'What are the limits on the angular momentum that a nucleus can sustain before fission?'; 'Do new forms of collective motion occur far from the valley of nuclear stability?' How does the ordering of quantum states, alter in highly dilute or neutron-rich matter?' The aim of this research proposal is to try to answer these questions. No one yet knows how heavy a nucleus can be; in other words, just how many neutrons and protons can be made to bind together. We will study the heaviest nuclei that can be made in the laboratory and determine their properties which will allow better predictions to be made for the 'superheavies'. For lighter nuclei we will explore in the region of the proton and neutron drip lines, which are the borders between bound and unbound nuclei. We will determine more carefully than ever before the precise location of these drip lines. As we approach the neutron drip line, only accessible for light nuclei, we will explore how the fundamental nuclear forces change their behaviour in diffuse neutron matter. On the other side of the line of stability, those at the proton drip line have so much electrical charge that they are highly unstable and try to achieve greater stability through the process of proton emission. We will investigate how nuclear behaviour is affected when protons become unbound. For these exotic systems we will also explore how the nucleus prefers to rearrange its shape, which can be a sphere, rugby ball, pear, etc. and how it stores its energy among the possible degrees of freedom. We will also investigate how the properties of these nuclei develop as we make them spin faster and faster. We will try to determine more carefully than ever before the precise nature of ultra high spin states in heavy nuclei, just before the nucleus breaks up due to fission. This programme of research will employ a large variety of experimental methods to probe many aspects of nuclear structure, mostly using instrumentation that we have constructed at several world-leading accelerator laboratories. The work will require a series of related experiments at a range of facilities in order for us to gain an insight into the answers to the questions posed above. These experiments will help theorists to refine and test their calculations that have attempted to predict the properties of nuclei, often with widely differing results. The resolution of this problem will help us to describe the complex many-body system that the nucleus represents.

Publications

10 25 50
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Akkoyun S (2012) AGATA-Advanced GAmma Tracking Array in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

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Andersson L (2010) TASISpec-A highly efficient multi-coincidence spectrometer for nuclear structure investigations of the heaviest nuclei in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

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Andersson L-L (2010) TASISpec-A highly efficient multi-coincidence spectrometer for nuclear structure investigations of the heaviest nuclei in NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT

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Andgren K (2008) ?-ray spectroscopy of At 197 in Physical Review C

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Andreyev A (2009) a decay of At 194 in Physical Review C

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Andreyev A (2010) The new isotope 179 Pb and a-decay properties of 179 Tl m in Journal of Physics G: Nuclear and Particle Physics

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Andreyev A (2009) a decay of Pb 180 , 181 in Physical Review C

 
Description Our programme of research aims to measure the structure (quantum states, transition matrix elements) of bound or unbound states of exotic systems near or at the limit of nuclear existence. Its goal is to address many of the key questions in this field by applying precision measurements of the physical observables that allow rigorous testing of model predictions. In particular, we wish to understand how nuclei can support the highest values of angular momentum, how the shell behaviour, the pairing fields, the single-particle and the collective structure of nuclei evolve away from stability towards the drip lines and towards the heaviest nuclear systems, and how exotic nuclear matter behaves through studies of nuclear density and nuclear correlations. New discoveries will follow major advances in instrumentation, using intense stable beams and new beams from radioactive beam facilities.
Exploitation Route Nuclear theory, healthy, security and energy sectors might take our findings forward.
Sectors Energy,Healthcare,Security and Diplomacy

 
Description To aid theoretical understanding of nuclear physics and indirect applications to security, energy and health.
First Year Of Impact 2014
Sector Energy,Healthcare,Security and Diplomacy
Impact Types Societal

 
Description Standard Grant
Amount £182,012 (GBP)
Organisation Science and Technologies Facilities Council (STFC) 
Sector Academic/University
Country United Kingdom
Start 10/2010 
End 12/2012
 
Description Standard Grant
Amount £34,067 (GBP)
Organisation Science and Technologies Facilities Council (STFC) 
Sector Academic/University
Country United Kingdom
Start 10/2009 
End 06/2013
 
Description GREAT collaboration 
Organisation University of Jyvaskyla
Department Department of Physics
Country Finland 
Sector Academic/University 
PI Contribution Constructed GREAT spectrometer and TDR DAQ system. Spokesperson of many experiments.
Collaborator Contribution facility
Impact 24 publications
 
Description MINIBALL collaboration 
Organisation European Organization for Nuclear Research (CERN)
Department ISOLDE Radioactive Ion Beam Facility
Country Switzerland 
Sector Public 
PI Contribution Expertise on Coulomb Excitation analysis, spokespersons of 2 active ISOLDE experiments
Impact several publications
 
Description MINIBALL collaboration 
Organisation Lund University
Department Department of Physics
Country Sweden 
Sector Academic/University 
PI Contribution Expertise on Coulomb Excitation analysis, spokespersons of 2 active ISOLDE experiments
Impact several publications
 
Description MINIBALL collaboration 
Organisation University of Cologne
Department Department of Physics
Country Germany 
Sector Academic/University 
PI Contribution Expertise on Coulomb Excitation analysis, spokespersons of 2 active ISOLDE experiments
Impact several publications
 
Description MINIBALL collaboration 
Organisation University of Leuven
Department Department of Physics and Astronomy
Country Belgium 
Sector Academic/University 
PI Contribution Expertise on Coulomb Excitation analysis, spokespersons of 2 active ISOLDE experiments
Impact several publications
 
Description R3B Collaboration (NUSTAR) 
Organisation Facility for Antiproton and Ion Research
Department Nuclear Structure, Astrophysics and Reactions
Country Germany 
Sector Public 
PI Contribution Collaborative research/experiments. Leadership in design and construction of detection systems (e.g. Si Tracker and associated EDAQ). Data analysis and monte carlo simulations (supervision of PhD students), scientific input (experimental proposals, authorship of publications...). Manpower (technical and research staff, PhD students) for construction of equipment and running experiments.. Presentations at collaboration meetings, workshops, conferences.
Collaborator Contribution Access to research large-scale facility and beam time, technical support, PhD students and research staff, etc. T. Aumann spokesperson of R3B collaboration.
Impact Publications. PhD theses (S. Paschalis, J. Taylor). Training of PhD students and research staff. Invitations to speak at meetings, workshops, conferences. Project leadership of Si tracker (NUSTAR-UK project grant).
 
Description R3B Collaboration (NUSTAR) 
Organisation Facility for Antiproton and Ion Research
Sector Private 
PI Contribution Collaborative research/experiments. Leadership in design and construction of detection systems (e.g. Si Tracker and associated EDAQ). Data analysis and monte carlo simulations (supervision of PhD students), scientific input (experimental proposals, authorship of publications...). Manpower (technical and research staff, PhD students) for construction of equipment and running experiments.. Presentations at collaboration meetings, workshops, conferences.
Collaborator Contribution Access to research large-scale facility and beam time, technical support, PhD students and research staff, etc. T. Aumann spokesperson of R3B collaboration.
Impact Publications. PhD theses (S. Paschalis, J. Taylor). Training of PhD students and research staff. Invitations to speak at meetings, workshops, conferences. Project leadership of Si tracker (NUSTAR-UK project grant).
 
Description R3B Collaboration (NUSTAR) 
Organisation Helmholtz Association of German Research Centres
Department GSI Helmholtz Centre for Heavy Ion Research
Country Germany 
Sector Public 
PI Contribution Collaborative research/experiments. Leadership in design and construction of detection systems (e.g. Si Tracker and associated EDAQ). Data analysis and monte carlo simulations (supervision of PhD students), scientific input (experimental proposals, authorship of publications...). Manpower (technical and research staff, PhD students) for construction of equipment and running experiments.. Presentations at collaboration meetings, workshops, conferences.
Collaborator Contribution Access to research large-scale facility and beam time, technical support, PhD students and research staff, etc. T. Aumann spokesperson of R3B collaboration.
Impact Publications. PhD theses (S. Paschalis, J. Taylor). Training of PhD students and research staff. Invitations to speak at meetings, workshops, conferences. Project leadership of Si tracker (NUSTAR-UK project grant).
 
Description TASCA Collaboration 
Organisation GSI
Department KP
Country Ireland 
Sector Public 
PI Contribution Parts of the detection system, Manpower, Data Analysis, Monte Carlo Simulation, Intellectual Input
Collaborator Contribution Technical Support for Experiment
Impact Confirmation of Element 114 and New isotope 277Hs (Duellmann et al, PRL 104 2010 252701) Spectroscopy of 253No (Anderson et al, NIMA622 2010 164)
Start Year 2006
 
Description TASCA Collaboration 
Organisation Helmholtz Association of German Research Centres
Department Helmholtz Institute Mainz
Country Germany 
Sector Public 
PI Contribution Parts of the detection system, Manpower, Data Analysis, Monte Carlo Simulation, Intellectual Input
Collaborator Contribution Technical Support for Experiment
Impact Confirmation of Element 114 and New isotope 277Hs (Duellmann et al, PRL 104 2010 252701) Spectroscopy of 253No (Anderson et al, NIMA622 2010 164)
Start Year 2006
 
Description TASCA Collaboration 
Organisation Johannes Gutenberg University of Mainz
Department Institute for Nuclear Chemistry
Country Germany 
Sector Academic/University 
PI Contribution Parts of the detection system, Manpower, Data Analysis, Monte Carlo Simulation, Intellectual Input
Collaborator Contribution Technical Support for Experiment
Impact Confirmation of Element 114 and New isotope 277Hs (Duellmann et al, PRL 104 2010 252701) Spectroscopy of 253No (Anderson et al, NIMA622 2010 164)
Start Year 2006
 
Description BBC Atom 
Form Of Engagement Activity A press release, press conference or response to a media enquiry/interview
Part Of Official Scheme? No
Primary Audience Public_other audiences
Results and Impact Scientific Advisor to the BBC "Atom" Series presented by Jim Al-Khalili

Greater public awareness of Superheavy Element Research
Year(s) Of Engagement Activity 2008
 
Description Froehlich Lecture 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Primary Audience Participants in your research
Results and Impact 100 members of the Physics and Chemistry departments in Liverpool including 20-30 undergraduate students attended. We had a lively discussion.

Greater awareness of Superheavy Element Research in the School of Physical Sciences (Physics, Chemistry, Maths)
Year(s) Of Engagement Activity 2010
 
Description Nuclear Physics Master Class 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Type Of Presentation Keynote/Invited Speaker
Geographic Reach Regional
Primary Audience Schools
Results and Impact About 10-20 six-formers attended practical activities and presentations over a number of days, including discussions in the Q&A part of the presentations.

None, it is hoped that the activities raise the awareness of the impact of Nuclear Physics on daily life.
Year(s) Of Engagement Activity 2012,2013,2014
 
Description PHYSOC Lecture 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Primary Audience Schools_students
Results and Impact ~40 undergraduate physics students attended and lively debate ensued.

Several people have expressed an interest to do a PhD with me on this subject.
Year(s) Of Engagement Activity 2009,2010
 
Description Teachers Conference 
Form Of Engagement Activity Participation in an open day or visit at my research institution
Part Of Official Scheme? Yes
Primary Audience Schools_teachers
Results and Impact ~20 teachers attended and we had good discussions about science and public engagement.

None
Year(s) Of Engagement Activity 2010