A.V. Ramayya and J.H. Hamilton Vanderbilt University.

Slides:

Advertisements

Similar presentations

First-principles calculations with perturbed angular correlation experiments in MnAs and BaMnO 3 Workshop, November Experiment: IS390.

Advertisements

GOSIA As a Simulation Tool J.Iwanicki, Heavy Ion Laboratory, UW.

 NMR arises from the fact that certain atomic nuclei have a property called “ spin ”  “Spin” is caused by circulating nuclear charge and can be thought.

Grupo de Física Nuclear Experimental G F E N CSIC I M E January 2006, Hirschegg, AustriaM.J.G. Borge, IEM CSIC1 Hirschegg’06: Astrophysics and Nuclear.

Advanced GAmma Tracking Array

Coulomb excitation with radioactive ion beams

Oslo-07-TD Landscapes and fluctuations of two-dimensional rotational  - spectra – coupling between rotational and thermal motion Rare earth nuclei p resolved.

Lecture 2 1 H Nuclear Magnetic Resonance. Gas Chromatograph of Molecular Hydrogen at –100 °C Thermoconductivity Detector 12.

Double beta decay nuclear matrix elements in deformed nuclei O. Moreno, R. Álvarez-Rodríguez, P. Sarriguren, E. Moya de Guerra F. Šimkovic, A. Faessler.

High spin states in 136,137 La, 148 Ce and 105 Mo.

Nuclear Magnetic Resonance Spectrometry Chap 19. Absorption in CW Experiments Energy of precessing particle E = -μ z B o = -μ B o cos θ When an RF photon.

Basics of Magnetic Resonance Imaging

A short presentation in the group by Prem Basnet 09/29/04.

Nuclear de-excitation Outline of approach… Source of radiation Propagation of radiation field Detection of radiation ?? nucleus.

Simulations with MEGAlib Jau-Shian Liang Department of Physics, NTHU / SSL, UCB 2007/05/15.

NUCLEAR STRUCTURE PHENOMENOLOGICAL MODELS

Gamma ray spectrum, its acquiring and analysis

Stopping Power The linear stopping power S for charged particles in a given absorber is simply defined as the differential energy loss for that particle.

Rotational bands in the rare-earth proton emitters and neighboring nuclei Darek Seweryniak Argonne National Laboratory PROCON Rotational landscape.

Jag Tuli NSDD, Vienna, 4/2015 ENSDF Policies 4/15 Jagdish Tuli* National Nuclear Data Center Brookhaven National Laboratory * Brookhaven.

Calculating Molecular Properties

EXPERIMENTS WITH LARGE GAMMA DETECTOR ARRAYS Lecture VI Ranjan Bhowmik Inter University Accelerator Centre New Delhi

Physical Chemistry 2 nd Edition Thomas Engel, Philip Reid Chapter 28 Nuclear Magnetic Resonance Spectroscopy.

Determination of Spin-Lattice Relaxation Time using 13C NMR

M. Girod, F.Chappert, CEA Bruyères-le-Châtel Neutron Matter and Binding Energies with a New Gogny Force.

Anh T. Le and Timothy C. Steimle* The molecular frame electric dipole moment and hyperfine interaction in hafnium fluoride, HfF. Department of Chemistry.

Computational Lab in Physics: Final Project Monte Carlo Nuclear Collisions: Glauber Model.

1 TCP06 Parksville 8/5/06 Electron capture branching ratios for the nuclear matrix elements in double-beta decay using TITAN ◆ Nuclear matrix elements.

Proton precession in magnetic fields

Reiner Krücken - Yale University Reiner Krücken Wright Nuclear Structure Laboratory Yale University Why do we measure lifetimes ? The recoil-distance method.

بسم الله الرحمن الرحيم ” وقل رب زدنى علماً “ صدق الله العظيم.

Α - capture reactions using the 4π γ-summing technique Α. Lagoyannis Institute of Nuclear Physics, N.C.S.R. “Demokritos”

Irakli Chakaberia Final Examination April 28, 2014.

Chapter 10 Gamma Decay ● Introduction ◎ Energetics of γ Decay ● Decay Constant for γ Decay ◎ Classical Electromagnetic Radiation ● Quantum Description.

1 undressing (to fiddle the decay probability) keV gamma E0, 0 + ->0 + e - conversion decay E x =509 keV, T 1/2 ~20 ns Fully stripping.

High-spin structures in the 159 Lu nucleus Jilin University, China Institute of Atomic Energy 李聪博 The 13th National Nuclear Structure Conference of China.

Summer Practice in JINR Mathematical modeling of high-energy particle beams in accelerators.

NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY Basics of …….. NMR phenomenonNMR phenomenon Chemical shiftChemical shift Spin-spin splittingSpin-spin splitting.

Search for the Exotic Wobbling Mode in 171 Re MIDN 1/C Eowyn Pedicini, USN Advisers: Professor Daryl Hartley LT Brian Cummings, USN.

Lecture I.1 Nuclear Structure Observables Alexandru Negret.

Chapter 9 Covalent Bonding: Orbitals. Schroedinger An atomic orbital is the energy state of an electron bound to an atomic nucleus Energy state changes.

Andrew Stuchbery Department of Nuclear Physics, The Australian National University Canberra, ACT 0200, Australia Excited-state g-factor measurements: Recoil.

EXPERIMENTS WITH LARGE GAMMA DETECTOR ARRAYS Lecture IV Ranjan Bhowmik Inter University Accelerator Centre New Delhi

Octavian Sima Physics Department Bucharest University

The Highs and Lows of the A~100 Region Paddy Regan Dept. of Physics, University of Surrey, UK and WNSL, Yale University, New Haven, CT

Beam Polarimetry Matthew Musgrave NPDGamma Collaboration Meeting Oak Ridge National Laboratory Oct. 15, 2010.

Athens, July 9, 2008 The two-step  cascade method as a tool for studying  -ray strength functions Milan Krtička.

Cross section of elementally process [5] The  -ray spectroscopy of light hypernuclei at J-PARC (E13) K. Shirotori for the Hyperball-J collaboration Department.

Introduction to Neutron Scattering Jason T. Haraldsen Advanced Solid State II 2/27/2007.

LLNL-PRES This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under contract DE-AC52-07NA27344.

Linking Transitions (and Search for Superintruders) in the A  80 Region of Superdeformation Nilsson Conf. Lund, Sweden 17 June 2005 C. J. Chiara, D. G.

Magnetic moment measurements with the high-velocity transient field (HVTF) technique at relativistic energies Andrea Jungclaus IEM-CSIC Madrid, Spain Andrew.

Spin Precession Animation “DEMO”

Nuclear Magnetic Resonance (NMR) NMR arises from the fact that certain atomic nuclei have a property called “spin” In analogy with other forms of spectroscopy,

Tracking Background GRETINA Software Working Group Meeting September 21-22, 2012, NSCL MSU I-Yang Lee Lawrence Berkeley National Laboratory.

Tokyo Institute of Technology Hiroyuki Kawasaki, Asao Mizoguchi, Hideto Kanamori High Resolution Infrared Spectroscopy of CH 3 F-(ortho-H 2 ) n cluster.

Magnetic Resonance Imaging Glenn Pierce, King’s College London, Department of Physics Introduction Edward Purcell and Felix Bloch were both awarded the.

Sizes. W. Udo Schröder, 2011 Nuclear Spins 2 Intrinsic Nuclear Spin Nuclei can be deformed  can rotate quantum mech.  collective spin and magnetic effects.

Chiral Symmetry Breaking in Nuclei J.H. Hamilton 1, S.J. Zhu 1,2,3, Y.X. Luo 1,4,, A.V. Ramayya 1, J.O. Rasmussen 4, J.K. Hwang 1, S. Frauendorf 5, V.

Shape coexistence in the neutron- deficient Pb region: Coulomb excitation at REX-ISOLDE Liam Gaffney 1,2 Nele Kesteloot 2,3 1 University of the West of.

Negative-parity Bands of 115 Pd and Band Structures in 113,115,117 Pd D. Fong, E.F. Jones, P.M. Gore, J.K. Hwang, A.V. Ramayya, J.H. Hamilton, and Y.X.

Monte Carlo methods in spallation experiments Defense of the phD thesis Mitja Majerle “Phasotron” and “Energy Plus Transmutation” setups (schematic drawings)

Electron Spin Resonance Experiment

Determining Reduced Transition Probabilities for 152 ≤ A ≤ 248 Nuclei using Interacting Boson Approximation (IBA-1) Model By Dr. Sardool Singh Ghumman.

Observation of Octupole Correlations in Ba and Ce Nuclei

(Instrument part) Thanundon Kongnok M

The problem Experimentally available: nQ = eQVzz/h

New Levels in 162Gd DOLL Brayton M. (NBPHS, Vanderbilt University) BREWER, N.T. (Vanderbilt University) HAMILTON, J. H. (Vanderbilt University) RAMAYYA,

How do nuclei rotate? 2. High Spin.

Presentation transcript:

A.V. Ramayya and J.H. Hamilton Vanderbilt University

EXPERIMENTAL METHODS Lawrence Berkeley National Laboratory Gammasphere Detector Array with 101 Compton-suppressed Ge Detectors 252 Cf Source of 62  Ci is sandwitched between two iron foils. Total of 5.7x10 11 triple – and higher –fold   coincidence events (in cube) Radware software package to analyze data Angular correlation of cascades of gamma rays.

I1I1 I2I2 I3I3  1 (L 1 L 1 )  2 (L 2 L 2 )  

If the intermediate state interacts with a magnetic field of sufficient strength for a sufficient length of time, then the experimentally observed correlation will be attenuated. Specifically, for a constant magnetic field, B, a nucleus with spin I and magnetic moment  will precess about the direction of B with the Larmor precession frequency.

mean precession angle,  The Larmor Precession frequency,  L B HF : nuclear hyperfine field  : mean life time

Detector response function 1.For a typical angular correlation measurement, it is necessary to calculate a solid angle correction Q k for each parameter A k. 2.However, for very low intensity transitions, the sensitivity of the angular correlation measurement can be improved by the detector response function R n (q, E1, E2). 3.For a given detector pair, the response function describes the distribution of possible angles about the central angle of the pair as a function of energy. The response functions for each pair can then be summed to find the response function of each angle bin.

1.We calculate the response function using a simple Monte Carlo simulation, with the  ray transport simulated up to the first collision. This is equivalent to the traditional calculation of Q k. 2.The mean free path, l(E), of  -rays was calculated using the known Gammasphere detector properties. 3.The energy dependence of R n ( , E1, E2) is negligible, and so only R n (  ) was calculated.

17 groups of 64 bins (1,2), (3,4,5,6), (7,8,9,10), (12,13,14,15), (16,17,18), (19,20,21,22,23), (24,25,26), (27,28,29), (30,31,32,33,34), (35,36,37), (38,39,40), (41,42,43,44,45), (46,47,48), (49,50,51,52), (54,55,56,57), (58,59,60,61), (62,63)



t 1/2 =0.2 ps keV keV Ba A 2 (theory) = A 4 (theory) =

Mixing ratios of  I=1 transitions within a rotational band g R = ½(Z/A), g K : intrinsic g factor  : Nilsson coefficients, g l =0, g s eff = Ref.: S,G. Nilsson, Nat. Fys. Medd. Dan. Vis. Selsk., 29 (1955).

/2 - 5/ /2 - 13/2 - 11/

/2 - 5/2 - 7/2 -

/2 + 7/2 + 9/

Nucleus Energy (keV) Configuration s  (cal)  (exp) 101 Zr /2[411] (6) Q o =2.843/2[422]0.44 3/2[402]0.22

NucleusEnergy (keV)Configurations  (cal)  (exp) 107 Mo152.15/2[413]0.79 Q o =3.095/2[402] (7) /2[523] (9) 103 Mo102.83/2[411] (5) Q o =3.023/2[422]0.50 3/2[402] /2[532] Mo95.35/2[532] (3) Q o = /2[532] (4)

NucleusEnergy (keV) Configurations  (cal)  (exp) 109 Ru185.15/2[413]1.07 Q o =3.285/2[402] (6) /2[413]0.98 5/2[402] (10) 111 Ru150.25/2[413]0.85 Q o =3.325/2[402] (2)

Summary NucleusBandsPreviously assigned Conf. Present work 101 ZrGround band3/2[411]confirmed 103 MoGround band3/2[411]confirmed Excited band5/2[532]confirmed 105 MoGround band5/2[532]confirmed 107 MoGround band5/2[413]5/2[402] Excited band7/2[523]confirmed 109 RuGround band5/2[413] 5/2[402] 111 RuGround band5/2[413] 5/2[402]