Upload File

study of nuclear shapes in 140sm via coulomb excitation€¦ · 1: measure transitional matrix...

  • Home
  • Documents
  • Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+
39
Study of nuclear shapes in 140 Sm via Coulomb excitation Malin Klintefjord University of Oslo February 1, 2013 Malin Klintefjord (Uio) February 1, 2013 1 / 19

Upload: others

Post on 03-Aug-2020

1 views

Category:

Documents


0 download

Report

TRANSCRIPT

Page 1: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

Study of nuclear shapes in 140Sm via Coulomb excitation

Malin Klintefjord

University of Oslo

February 1, 2013

Malin Klintefjord (Uio) February 1, 2013 1 / 19

Page 2: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

Outline

140Sm- Why do we care?

What do we want to measure?

How do we measure it?

Experimental setup

So far?

Future plans?

Malin Klintefjord (Uio) February 1, 2013 2 / 19

Page 3: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

Outline

140Sm- Why do we care?

What do we want to measure?

How do we measure it?

Experimental setup

So far?

Future plans?

Malin Klintefjord (Uio) February 1, 2013 2 / 19

Page 4: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

Outline

140Sm- Why do we care?

What do we want to measure?

How do we measure it?

Experimental setup

So far?

Future plans?

Malin Klintefjord (Uio) February 1, 2013 2 / 19

Page 5: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

Outline

140Sm- Why do we care?

What do we want to measure?

How do we measure it?

Experimental setup

So far?

Future plans?

Malin Klintefjord (Uio) February 1, 2013 2 / 19

Page 6: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

Outline

140Sm- Why do we care?

What do we want to measure?

How do we measure it?

Experimental setup

So far?

Future plans?

Malin Klintefjord (Uio) February 1, 2013 2 / 19

Page 7: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

Outline

140Sm- Why do we care?

What do we want to measure?

How do we measure it?

Experimental setup

So far?

Future plans?

Malin Klintefjord (Uio) February 1, 2013 2 / 19

Page 8: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

14062 Sm

14062 Sm is located on the proton rich edge in the chart of nuclei and it is

predicted to have negative quadropole moment.

Malin Klintefjord (Uio) February 1, 2013 3 / 19

Page 9: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

14062 Sm

Malin Klintefjord (Uio) February 1, 2013 4 / 19

Page 10: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

Goal

Measure quadropole moment of 2+1 .

Measure transitional matrix element (B(E2)-value) between 2+1 , 2+2and 4+1 - states.

Search for low lying 0+2 -states.

Study γ-intensity from Coulomb excitation.

Study angular dependence to get sign of quadropole moment.

Matrix elements are also related to the lifetime of the state.

Malin Klintefjord (Uio) February 1, 2013 5 / 19

Page 11: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

Goal

Measure quadropole moment of 2+1 .

Measure transitional matrix element (B(E2)-value) between 2+1 , 2+2and 4+1 - states.

Search for low lying 0+2 -states.

Study γ-intensity from Coulomb excitation.

Study angular dependence to get sign of quadropole moment.

Matrix elements are also related to the lifetime of the state.

Malin Klintefjord (Uio) February 1, 2013 5 / 19

Page 12: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

Goal

Measure quadropole moment of 2+1 .

Measure transitional matrix element (B(E2)-value) between 2+1 , 2+2and 4+1 - states.

Search for low lying 0+2 -states.

Study γ-intensity from Coulomb excitation.

Study angular dependence to get sign of quadropole moment.

Matrix elements are also related to the lifetime of the state.

Malin Klintefjord (Uio) February 1, 2013 5 / 19

Page 13: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

Goal

Measure quadropole moment of 2+1 .

Measure transitional matrix element (B(E2)-value) between 2+1 , 2+2and 4+1 - states.

Search for low lying 0+2 -states.

Study γ-intensity from Coulomb excitation.

Study angular dependence to get sign of quadropole moment.

Matrix elements are also related to the lifetime of the state.

Malin Klintefjord (Uio) February 1, 2013 5 / 19

Page 14: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

Goal

Measure quadropole moment of 2+1 .

Measure transitional matrix element (B(E2)-value) between 2+1 , 2+2and 4+1 - states.

Search for low lying 0+2 -states.

Study γ-intensity from Coulomb excitation.

Study angular dependence to get sign of quadropole moment.

Matrix elements are also related to the lifetime of the state.

Malin Klintefjord (Uio) February 1, 2013 5 / 19

Page 15: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

Goal

Measure quadropole moment of 2+1 .

Measure transitional matrix element (B(E2)-value) between 2+1 , 2+2and 4+1 - states.

Search for low lying 0+2 -states.

Study γ-intensity from Coulomb excitation.

Study angular dependence to get sign of quadropole moment.

Matrix elements are also related to the lifetime of the state.

Malin Klintefjord (Uio) February 1, 2013 5 / 19

Page 16: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

How?

Coulomb excitation experiment at CERN-ISOLDE.

140Sm + 94Mo.140Sm obtained with Resonant Laser Ionization.

Beam energy: 2.85 MeV.

Intensity: 2·105 particles per second.

Malin Klintefjord (Uio) February 1, 2013 6 / 19

Page 17: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

How?

Coulomb excitation experiment at CERN-ISOLDE.140Sm + 94Mo.

140Sm obtained with Resonant Laser Ionization.

Beam energy: 2.85 MeV.

Intensity: 2·105 particles per second.

Malin Klintefjord (Uio) February 1, 2013 6 / 19

Page 18: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

How?

Coulomb excitation experiment at CERN-ISOLDE.140Sm + 94Mo.140Sm obtained with Resonant Laser Ionization.

Beam energy: 2.85 MeV.

Intensity: 2·105 particles per second.

Malin Klintefjord (Uio) February 1, 2013 6 / 19

Page 19: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

How?

Coulomb excitation experiment at CERN-ISOLDE.140Sm + 94Mo.140Sm obtained with Resonant Laser Ionization.

Beam energy: 2.85 MeV.

Intensity: 2·105 particles per second.

Malin Klintefjord (Uio) February 1, 2013 6 / 19

Page 20: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

How?

Coulomb excitation experiment at CERN-ISOLDE.140Sm + 94Mo.140Sm obtained with Resonant Laser Ionization.

Beam energy: 2.85 MeV.

Intensity: 2·105 particles per second.

Malin Klintefjord (Uio) February 1, 2013 6 / 19

Page 21: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

Experimental setup

γ-photons detected in MINIBALL detector (8*3*6 segments).

Particles detected in circular DSSSD (12*16 pixels). Angular range(lab): [19.65 58.36] deg.

Malin Klintefjord (Uio) February 1, 2013 7 / 19

Page 22: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

Experimental setup

γ-photons detected in MINIBALL detector (8*3*6 segments).

Particles detected in circular DSSSD (12*16 pixels). Angular range(lab): [19.65 58.36] deg.

Malin Klintefjord (Uio) February 1, 2013 7 / 19

Page 23: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

So far

Learning about Coulex experiment at ISOLDE.

Sort the data from med to root files.

Understand German error messages...

Malin Klintefjord (Uio) February 1, 2013 8 / 19

Page 24: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

So far

Learning about Coulex experiment at ISOLDE.

Sort the data from med to root files.

Understand German error messages...

Malin Klintefjord (Uio) February 1, 2013 8 / 19

Page 25: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

So far

Learning about Coulex experiment at ISOLDE.

Sort the data from med to root files.

Understand German error messages...

Malin Klintefjord (Uio) February 1, 2013 8 / 19

Page 26: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

Calibration of MINIBALL

Energy calibration for each segment and core of MINIBALL, doneusing 133Ba− 152Eusource.

Efficiency calibration with and without addback.

Malin Klintefjord (Uio) February 1, 2013 9 / 19

Page 27: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

Calibration of MINIBALL

Energy calibration for each segment and core of MINIBALL, doneusing 133Ba− 152Eusource.

Efficiency calibration with and without addback.

Malin Klintefjord (Uio) February 1, 2013 9 / 19

Page 28: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

Calibration of particle detector

Energy calibration of each strip needed for identification of beam andtarget particles, but not too exact.

Adjusted pixels that was “off” expected dependence.

Malin Klintefjord (Uio) February 1, 2013 10 / 19

Page 29: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

Calibration of particle detector

Energy calibration of each strip needed for identification of beam andtarget particles, but not too exact.

Adjusted pixels that was “off” expected dependence.

Malin Klintefjord (Uio) February 1, 2013 10 / 19

Page 30: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

Doppler corrected gamma spectra

Malin Klintefjord (Uio) February 1, 2013 11 / 19

Page 31: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

Angular dependence

Malin Klintefjord (Uio) February 1, 2013 12 / 19

Page 32: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

Future plans

“Play” with the angular binning.

Discover the world of GOSIA- in order to go from γ-intensities toMatrix elements.

Malin Klintefjord (Uio) February 1, 2013 13 / 19

Page 33: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

Future plans

“Play” with the angular binning.

Discover the world of GOSIA- in order to go from γ-intensities toMatrix elements.

Malin Klintefjord (Uio) February 1, 2013 13 / 19

Page 34: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

Questions?

Malin Klintefjord (Uio) February 1, 2013 14 / 19

Page 35: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

Backup

Malin Klintefjord (Uio) February 1, 2013 15 / 19

Page 36: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

Backup

Malin Klintefjord (Uio) February 1, 2013 16 / 19

Page 37: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

Backup

Malin Klintefjord (Uio) February 1, 2013 17 / 19

Page 38: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

Backup

Malin Klintefjord (Uio) February 1, 2013 18 / 19

Page 39: Study of nuclear shapes in 140Sm via Coulomb excitation€¦ · 1: Measure transitional matrix element (B(E2)-value) between 2+ 1, 2 + 2 and 4+ 1 - states. Search for low lying 0+

Backup

Malin Klintefjord (Uio) February 1, 2013 19 / 19


Relativistic Coulomb excitation of nuclei near 100 Sn

COULOMB EXCITATION IN ODD-A RARE-EARTH ... - … Lab Theses...COULOMB EXCITATION IN ODD-A RARE-EARTH NUCLEI by Edwin Vandewater Bishop B.A., Swarthmore College, 1958 M.S., Yale University,

Shape determination in Coulomb excitation of 72 Kr

Relativistic Coulomb Excitation: from RISING to PreSPEC

Coulomb Breakup and Pairing Excitation of Two-Neutron Halo Nucleus 11 Li

Wolfram KORTEN 1 Euroschool Leuven – September 2009 Coulomb excitation with radioactive ion beams Motivation and introduction Theoretical aspects of Coulomb

Analysis methods of safe Coulomb-excitation experiments ...reactions to study the structure of nuclei [1]. Specifically, Coulomb excitation at safe energies with RIBs is now giv-ing

Coulomb excitation of 127,128 Cd

arXiv · Theory and Applications of Coulomb Excitation Carlos Bertulani Texas A& M University-Commerce, Commerce, TX 75429, USA Because the interaction is well-known, Coulomb excitation

Detection of X rays in the Neutron-Deficient Polonium Coulomb Excitation Experiments

Measuring octupole collectivity in 221 Rn using Coulomb excitation at MINIBALL, & SPEDE

Coulomb excitation experiments at JAEA (Japan Atomic ... · - Coulomb excitation experiments at JAEA with GEMINI-II and LUNA - 2. Coulomb excitation experiments at JAEA 2.1 Ge isotopes

AGATA@GSI LoI Relativistic Coulomb M1 excitation of neutron-rich 85 Br N. Pietralla G. Rainovski J. Gerl D. Jenkins

Relativistic Coulomb excitation within Time Dependent ...faculty.tamuc.edu/cbertulani/cab/papers/man_sup1.pdfRelativistic Coulomb excitation within Time Dependent Superfluid Local

Relativistic Coulomb Excitation of Neutron-Rich 54,56,58 Cr Herbert Hübel Helmholtz-Institut für Strahlen- und Kernphysik Universität Bonn Germany

Low-energy Coulomb excitation Introductionslcj.uw.edu.pl/.../uploads/2018/11/kwl_Darmstadt_part1.pdf · 2018-11-27 · Low-energy Coulomb excitation Introduction Kasia Wrzosek-Lipska,

Coulomb excitation of the neutron-rich Cu isotopes and isomers using RILIS

Wolfram KORTEN 1 Euroschool Leuven – Septemberi 2009 Coulomb excitation with radioactive ion beams Motivation and introductionMotivation and introduction

Coulomb Excitation of Double Phonon Giant Resonances Programme Motivation Introductory Remarks Experimental Technique Results Coulomb excitation of the

Coulomb Excitation of 140 Nd (and 140 Sm) Experiment IS496 MINIBALL@REX-ISOLDE

Coulomb-excitation of 112, 114, 116 Sn Pieter Doornenbal

Shape coexistence in exotic nuclei studied by low energy coulomb excitation Emmanuel Clément CERN-PH, Geneva

Coulomb excitation of the 42 Ca with AGATA Demonstrator

Measuring octupole collectivity in 221 Rn using Coulomb excitation at MINIBALL, & SPEDE George O’Neill

Coulomb excitation of 200Po studied at REX-ISOLDE with the

Shape coexistence in neutron-rich Sr isotopes: Coulomb excitation of 96 Sr

OCL Oblate nuclear shapes and shape coexistence in neutron ... · Multi-step Coulomb excitation safe energy ⇒purely electromagnetic excitation transitional matrix element ⇒B(E2)

Coulomb Excitation at REX-ISOLDE with MINIBALL

Coulomb Excitation of Neutron-rich Isotopes around A~140 (IS 411)

Coulomb Excitation of the K p =5 - 242m Am Isomer (t 1/2 =141 y)

Investigation of beam purity after in-trap decay and Coulomb excitation of 62 Mn- 62 Fe

Coulomb excitation of neutron-rich Sn, Te and Xe isotopes ...wolle/INDIA/IUAC-2013/PAPERS/Coulex/... · Coulomb excitation of neutron-rich Sn, ... Lab < 50°)# Precision ... 132Sn

Coulomb excitation of even 108-112 Ru and 104-108 Mo isotopes

Coulomb excitation of the neutron-rich 67,69,71,73 Cu with Miniball and REX-ISOLDE

Coulomb excitation and b -decay studies at (REX-)ISOLDE around Z = 28