nuclear physics in poland part i: experimental low energy nuclear physics
DESCRIPTION
Nuclear Physics in Poland Part I: Experimental low energy nuclear physics. Discovery of POLONIUM and RADIUM 1898. „...the ability to radiate does not depend on the arrangement of the atoms in a molecule but it is related instead to the interior of the atom. - PowerPoint PPT PresentationTRANSCRIPT
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Nuclear Physicsin Poland
Part I: Experimental low energy nuclear physics
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Maria Skłodowska-Curie1867-1934
„...the ability to radiate does not depend on the arrangement of the atoms in a molecule but it is related instead to the interior of the atom ...
Discovery of POLONIUM and RADIUM
1898
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1970 - IFJ Krakow – construction of the U-144 cyclotron
Warsaw University – construction of the Warsaw Cyclotron
– commisioning 1994
Warsaw University – cascade generator – ions of hundreds keV
Stefan Batory University, Vilno – natural radioactivity; Ra source
1930’s
1946 - 1955
Warsaw University – Andrzej SołtanAndrzej Sołtan 1 MV cascade accelerator (1950)
Jagiellonian University – Henryk Niewodniczański home built cyclotron U-48 (1956)
1955 - 1970IBJ Swierk - Warsaw – reactor EWA (1958); MARIA (1968)
IFJ Krakow – cyclotron U-120 (1958)
Warsaw University – home built 3 MV Van de Graaff (1961)
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14
27
IFJ PAN
IF UJ
Świerk
10
30
27
17
ZFJA UWZSJ UW
SLCJ UW
IPJ
scientists +engineers +PhD students
10
9
IF UŁ
IF UŚ
145
Warszawa
Łódź
Katowice
Kraków
Świerk
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Structure of exotic nuclei• neutron-deficient nuclei• neutron-rich nuclei• evolution of single part. structure and collectivity• light nuclei
Nuclei under extreme conditions:• excitation and decay of giant resonances• light charged particle emission
New symmetries and high spin structure in nuclei Nucleon-nucleon forces
• three-nucleon forces Superheavy nuclei
• fusion probabilities Dynamics of nucleus-nucleus collisions Double beta-decay; neutron decay - time reversal conservation
Experiments are carried out at many nuclear physics facilities around the world and also at our home facility – at the Warsaw Cyclotron
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ORNL Oak Ridge (USA)
ANL Argonne (USA)
Rochester (USA)
MSU (USA)
Canberra(Australia)
Aarhus
Liverpool
Manchester
GANIL Orsay
SaclayLyon
Milano
LNL
LNS
NBI
Stockholm
Uppsala
Dubna
St. Petersburg
Jyvaskyla
Kiev
KVI
Leuven
Madrid
MunchenPSI
CERN
Tokyo (Japan)
GSI
POLANDHMI
FZCRC
Grenoble
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„User Facility”: ~ 100 users
per year
national (80%)foreign (20%)
Isochronous cyclotron
• diameter 200 cm; Kmax=160• in operation since 1994• ion source: ECR, 10 GHz • beams: from B to Ar; • energy range 2 – 10 MeV/nucl.
~ 3000 hours of beam time per year
~ 90% for nuclear physics experiments
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• large NaI(Tl) crystal
• multiplicity filter
• Si-ball - 12 triple Si telescopes
JANOSIK
CUDAC• particle detector array
• 12 HPGe detectors with AC
• multiplicity filter
• Si-ball - 30 Si telescopes
• IC electron spectrometer
OSIRIS II
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ICARE
8 telescopes ΔE(gas) + E(Si)
24 telescopes ΔE(Si) + E(CsI)
16 telescopes ΔE(Si)+ΔE(Si)+E(CsI)
WIGISOLWarsaw Ion Guide
and Isotope Separatoron LineGas cell
Beam
Si detectors
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Si – BALLSLCJ
Warsaw University
RFDRecoil Filter Detector
IFJ PAN Krakow
target cham ber
fo il
e lectrode
scin t.P M T
HECTORIFJ PAN Krakow
INFN Milano
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A method to studyperipheral neutron density - antiprotonic atoms
(SLCJ UW Warsaw)
A method to study the structureof neutron-rich nuclei - deep-inelastic reactions
(IFJ PAN Krakow)
A tool to process Coulexdata - used worldwide - computer code GOSIA
(SLCJ UW Warsaw)
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Examples of results
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Chiral bands in nuclei
Collaboration led by the group from ZFJ, Warsaw University
Experiments atthe Warsaw Cyclotron, OSIRIS II Ge array
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Structure of the lowest 0+ excitations in neutron-rich Mo nuclei
Collaboration led by the Warsaw Coulex group,SLCJ, Warsaw University
Experiments at the Warsaw Cyclotron, CUDAC particle detection system
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Other results from the Warsaw Cyclotron:
• Fusion Barrier Distributions for the systems 20,22Ne + 118Sn, natNi
• Giant Dipole Radiation and Isospin Mixing in 44Ti and 60Zn
• Quadrupole Deformation of states in 14C from 11B+14C Scattering
PhD theses at the Warsaw Cyclotron:
4 completed12 in progress
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Two proton radioactivity
Collaboration led by the group fromZSJ, Warsaw University
Experiments at GSI
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Nuclear periphery studied
with antiprotonic atoms
Collaboration led by the group fromSLCJ, Warsaw Univ.
Experiments at CERN
protons
neutrons
„neutron skin” „neutron halo”
124Sn 124Sn
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Y
[a.
u.]
0 5 10 15 20 25 30 35E [MeV]
Jacobi shape transitionsin rapidly rotating nuclei
Collaboration led by the group from IFJ PAN, Krakow
Experiments in Strasbourgwith EUROBALL
Evolution of the equilibriumshape of46Ti
0
10
20
30
40
5060
0.0 0.5 1.0 1.5
010
18
26 2829
3032 34 36 38 40
GDRGDR strength function strength function
Spin
LSD model:shape evolutionCoriolis splitting
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32
New magic numberN=32
Collaboration led by the group from
IFJ PAN, Krakow
Experiments at Argonne National Lab.
USAwith GAMMASPHERE
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Participation in largeinternational collaborations
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Kraków
Warszawa
Katowice
ŚwierkŁódź
11 countriesZFJA UW
SLCJ UW
IFJ PAN
IPJ
AGATAAvanced Gamma Tracking Array
Commitments:• Global level processing • Data Analysis• Ancillary Detectors
6 man-years
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Kraków
Warszawa
Katowice
ŚwierkŁódź
Rare ISotope INvestigation at
GSI
16 countries
IFJ PAN
IF UJ
ZFJA UW
SLCJ UW
IPJ
ZSJ UW
Commitment:Contribution to the running cost of 7%
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Kraków
Warszawa
Katowice
Świerk
Łódź
ZSJ UW
SLCJ UW
ION Catcher
6 countries
• Development of a helium thermalisation gas cell • Optimisation of an ion extraction at WIGISOL
Effective Slowing-Down, Stopping in a
Gas Cell and Extraction of
Radioactive Ions
IPJ
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Kraków
Warszawa
ŚwierkŁódź
IFJ PAN
IF UJ
ZFJA UW
IF UŚ
CHIMERA REVERSEISOSPIN
7 countries
•Isospin effects in nucleus-nucleus collisions•One-body vs. two- body dissipation mechanism
Katowice
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Kraków
Warszawa
Świerk
SPIRAL 2at GANIL
IFJ PAN
IF UJ
ZFJA UWZSJ UW
SLCJ UW
IPJ
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Kraków
Warszawa
Katowice
ŚwierkŁódź
FAIRat GSI
FLAIR
IFJ PAN
IF UJ
ZFJA UWZSJ UW
SLCJ UW
IPJ
Facility for Low Antiproton Ion
Research
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Optical Time Projection Chamber – OTPC
a novel type of ionization chamber to obtain 3-dimensional topology of the two protons emitted from
the 45Fe ground state. (ZSJ Warsaw University)
Gas detector using gas scintillation
To be installed at theSHE detection system working at GANIL
(IF Jagiellonian University)
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Multidetector system TROLL
A new initiative - a new multidectetcor system TROLL to study Electromagnetic Transition Probabilities in nuclei by combining the two methods:
Coulomb Excitation MethodDoppler Shift Attenuation and Recoil Distance Method
TROLL would consist of:
- 20-30 Ge ACS spectrometers- 60 BaF2 detectors as multiplicity filter- COULEX chamber with 50-110 P-i-N Silicon detectors- Si inner ball for proton and alpha muliplicity- few Ge polarimeters
Presently available equipment amounts to about 2 million EuroAbout 300 - 400 thousand Euros is needed to complete the construction of TROLL.
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Funding of low energy nuclear physicsby the Ministry of Science: • Research grants: ~100 thousand Euros/year
• International collaboration ~70 thousand Euros/year
• Development of instrumentation ~250 thousand Euros/year
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We have research groups that carry out various studies at the frontiers of low energy nuclear physics in collaborationwith most of the major laboratories in the world.
We have a noticable experimental potential at home.
We are involved in many large international collaborations.
We have plans to develop new instrumentation at our labs.
Young people !
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A quote of Maria Sklodowska-Curie:
A scientist in his laboratory is not a mere technician: he is also a child confronting natural phenomena that impress him as though they were fairy tales.