N~Z studies with Gretina and neutron detectors W. Reviol, D. Rudolph, D.G. Sarantites, C.J. Chiara, D. Seweryniak Washington U. / Lund U. / U. of Maryland.

Slides:

Advertisements

Similar presentations

Fast-Timing with LaBr 3 :Ce Detectors and the Half-life of the I π = 4 – Intruder State in 34 P (…and some other stuff maybe..) Paddy Regan University.

Advertisements

Initial Science Case For GRETINA at ATLAS M.P. Carpenter Physics Division, Argonne National Laboratory ANL Gretina Workshop March 1, 2013.

GRETINA at ATLAS C.J. (Kim) Lister ATLAS Users Workshop 8-9 th October 2009 GRETINA ATLAS GAMMASPHERE.

Coupling ORRUBA and GRETINA Steven D. Pain Oak Ridge National Laboratory ORRUBA Coupling with GS Coupling with GRETINA Instrumentation GRETINA Workshop,

Exploring the drip lines: where are the proton and neutron drip lines exotic decay modes: - two-proton radioactivity -  -delayed multi-particle emission.

Testing isospin-symmetry breaking and mapping the proton drip-line with Lanzhou facilities Yang Sun Shanghai Jiao Tong University, China SIAP, Jan.10,

1. Isospin Symmetry and Coulomb Effects Towards the Proton Drip-Line RISING Experiment performed October 2003 Keele, GSI, Brighton, Lund, Daresbury, Surrey,

Γ spectroscopy of neutron-rich 95,96 Rb nuclei by the incomplete fusion reaction of 94 Kr on 7 Li Simone Bottoni University of Milan Mini Workshop 1°-

DESCANT and  -delayed neutron measurements at TRIUMF Paul Garrett University of Guelph.

08/08/091 Towards Super-Hercules and Nanoball Walter Reviol, Demetrios Sarantites Washington University, St. Louis, Missouri, USA ATLAS User Workshop,

High precision study of the  decay of 42 Ti  V ud matrix element and nuclear physics  Experimental and theoretical precisions  New cases: goals and.

What have we learned last time? Q value Binding energy Semiempirical binding energy formula Stability.

The LISA spectrometer David O’Donnell STFC Daresbury Laboratory.

12 th January 2011 PRESPEC Decay Physics Workshop University of Brighton 2011 High-spin states feeding seniority isomers in the heaviest N=82 isotones.

Possible Shears Bands in 204 At and 206 Fr Evan Seyfried.

GT (  ) : Weak Process: Important roles in the Universe Combined Analysis of Mirror GT Transitions for the study of Proton-Rich Far-Stability Nuclei.

Superheavy Element Studies Sub-task members: Paul GreenleesJyväskylä Rodi Herzberg, Peter Butler, RDPLiverpool Christophe TheisenCEA Saclay Fritz HessbergerGSI.

Fragment Mass Analyzer Darek Seweryniak, ANL C. N. Davids et al., Nucl. Instrum. Meth., B 70, 358 (1992).

E432a: Decay of Highly Excited Projectile-like Fragments Formed in dissipative peripheral collisions at intermediate energies 1.Understanding thermodynamic.

GRETINA experiments with fast beams at NSCL Dirk Weisshaar,  GRETINA and fast-beam experiments  Some details on implementation at NSCL  Performance.

Isospin impurity of the Isobaric Analogue State of super-allowed beta decay experimental technique isospin impurity determination Bertram Blank, CEN Bordeaux-Gradignan.

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

Decay Spectroscopy Working Group Nuclear Structure Theory Morten Hjorth-Jensen – Shell Structure and Interactions Ivan Borzov – Theory of  Decay Applications.

Dark Matter Search with Direction sensitive Scintillator Ⅱ Department of Physics, School of Science The University of Tokyo Y. Shimizu, M. Minowa, Y. Inoue.

Study Of Nuclei at High Angular Momentum – Day 1 Michael P. Carpenter Nuclear Physics School, Goa, India Nov. 9-17, 2011 Outline 1)Introduction 2)Producing.

Direct Reactions with ORRUBA and GRETINA Steven D. Pain Oak Ridge National Laboratory GRETINA Workshop, ANL, February 2013.

Nuclear structure around 100 Sn Darek Seweryniak, ANL.

3/1/13 WR, DGS111 Inverse-kinematic studies with Gretina and Phoswich Wall Walter Reviol and Demetrios Sarantites (Washington University) Gretina Workshop,

Core-excited states in 101 Sn Darek Seweryniak, ANL GS/FMA collaboration.

1 Beta Counting System Li XiangQing, Jiang DongXing, Hua Hui, Wang EnHong Peking University

Fundamental Interactions Physics & Instrumentation Conclusions Conveners: P. Mueller, J. Clark G. Savard, N. Scielzo.

UNIVERSITY OF JYVÄSKYLÄ RDDS measurements at RITU and prospects at HIE-ISOLDE T. Grahn University of Jyväskylä HIE-ISOLDE Spectrometer Workshop, Lund

Image credit: NASA/Dana Berr. X-ray bursts - Close binary system: very dense neutron star and main sequence companion star - Matter accreted onto surface.

GT (  ) : Important weak process  decay : absolute B(GT), limited to low-lying state CE reactions : relative B(GT), highly Ex region  decay  isospin.

RNB Cortina d’Ampezzo, July 3th – 7th 2006 Elisa Rapisarda Università degli studi di Catania E.Rapisarda for the Diproton collaboration 18 *

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.

Saclay, 30 January 2007 Rauno Julin Department of Physics University of Jyväskylä FinlandJYFL In-beam Spectroscopy of In-beam Spectroscopy of Transfermium.

General Groupings Proton-Rich D. Seweryniak (structure around 100 Sn) CARIBU D. Hartley (triaxial nuclei), D. Kulp (neg. parity bands) C. Chiara (RIB.

Spectroscopy studies by  decay -Proton-rich nuclei N~Z Deformation in the mass region A~75 Fundamental aspects of weak interaction, test of CVC -Neutron-rich.

12/17/2015Surrey Minischool - June 09 - Bentley1 HISPEC: Hi-resolution In-beam SPECtroscopy at FAIR: Exploring the Limits of Nuclear ExistenceOverview.

Β decay of 69 Kr and 73 Sr and the rp process Bertram Blank CEN Bordeaux-Gradignan.

W. Nazarewicz. Limit of stability for heavy nuclei Meitner & Frisch (1939): Nucleus is like liquid drop For Z>100: repulsive Coulomb force stronger than.

Muon and Neutron Backgrounds at Yangyang underground lab Muju Workshop Kwak, Jungwon Seoul National University 1.External Backgrounds 2.Muon.

E. Sahin, G. de Angelis Breaking of the Isospin Symmetry and CED in the A  70 mass region: the T z =-1 70 Kr.

1 Isospin symmetry. Beta-decay studies of Tz=-1 nuclei at Rising. B. Rubio for the Valencia-Osaka-Surrey-Leuven-Santiago-GSI Istambul-Lund-Legnaro Collaboration.

Beta decay around 64 Cr GANIL, March 25 th V 63 V 64 V 60 V 61 V 63 Cr 64 Cr 65 Cr 61 Cr 62 Cr 60 Cr 64 Mn 65 Mn 66 Mn 65 Fe 67 Fe 1) 2 + in 64.

Nuclear Astrophysics ARUNA Workshop, Notre Dame, IN Carl R. Brune Ohio University, Athens Ohio June 12-13, 2014.

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

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

Dipa Bandyopadhyay University of York

LISA proton drip line grant DaresburyJS LiverpoolRDP, RDH SurreyPaul Stevenson, Jim Al-Khalili EPSRC~£¾M Possible overlap with DTJ’s AF.

Isospin Mixing And In-beam Study Of 56 Co Non-yrast States At MLL/Miniball. Motivation And First Glance On The Results Of The Experiment Ana Montaner Pizá.

March, 2006SERC Course1  Z>92 (Heaviest Element in Nature) and upto Z= achieved by n irradiation or p,  and d bombardment in Cyclotron ( )

Technical solutions for N=Z Physics David Jenkins.

Advanced Implantation Detector Array (AIDA): Update & Issues Tom Davinson School of Physics The University of Edinburgh presented by Tom Davinson on behalf.

Gamma Spectrometry beyond Chateau Crystal J. Gerl, GSI SPIRAL 2 workshop October 5, 2005 Ideas and suggestions for a calorimeter with spectroscopy capability.

Proton emission from deformed rare earth nuclei Robert Page.

5/15/14 WR The Phoswich Wall – features, applications, performance Walter Reviol and Demetrios Sarantites (Washington University) ATLAS User.

The excitation and decay of nuclear isomers

Shape parameterization

1st AGATA-GRETINA Collaboration Meeting Shaofei Zhu

JLab6: Cluster structure connects to high-momentum components and internal quark modification of nuclei Short-Range Correlations (SRCs) dominated by np.

In-beam and isomer spectroscopy in the third island of inversion at EXOGAM+VAMOS E.Clément (GANIL)

Isospin Symmetry test on the semimagic 44Cr

MINOS: a new vertex tracker for in-flight γ-ray spectroscopy

Signal and Background in LENS

Experimental determination of isospin mixing in nuclear states;

Recent Highlights and Future Plans at VAMOS

GRETINA experiments with fast beams at NSCL

Presentation transcript:

N~Z studies with Gretina and neutron detectors W. Reviol, D. Rudolph, D.G. Sarantites, C.J. Chiara, D. Seweryniak Washington U. / Lund U. / U. of Maryland / ANL Gretina Workshop, ANL, March 2013 Neutron-Shell Detectors 35 hexagonal, tapered detectors. BC501A liquid scintillator. Active scintillator length 15 cm. n-γ separation: PSD and ToF. “Coverage”, efficiency for a r = 25 cm shell: 28% 4π, ε(1n) > 30%. Fast detectors, no severe rate limitation. Hence useful in FMA experiments. D.G. Sarantites et al., NIMA530, 473 (2004)

Some future projects  Nearly unbound odd-Z, N=Z-1 nuclei ( 57 Cu, 61 Ga, 65 As) via *xn channels  Prompt proton (g 9/2 ) emission competing with  decay  Isospin symmetry, shape changes, tunneling… Fusion-evaporation experiments with  Better energy resolution than Gammasphere (important for large E γ ).  Better linear-polarization sensitivity than Gammasphere.  For N ~ Z studies, neutron detection adds to reaction-channel selectivity. 9/2 + not seen; 61 Ga → 60 Zn? L-L. Andersson et al., PRC71, (R) (2005)

Some future projects  Nearly unbound odd-Z, N=Z-1 nuclei ( 57 Cu, 61 Ga, 65 As) via *xn channels  Prompt proton (g 9/2 ) emission competing with  decay  Isospin symmetry, shape changes, tunneling…   tagging in 100 Sn region with FMA+DSSD  Not as selective as discrete proton- or  -decay tags.  Ndets reduce background from dominant, less exotic isobars.  Gretina:  polarizations to locate h 11/2.  Octupole correlations in the neutron-deficient Ba/Te region  In many cases, bands are identified but assumed to have opposite parity. Fusion-evaporation experiments with  Better energy resolution than Gammasphere (important for large E γ ).  Better linear-polarization sensitivity than Gammasphere.  For N ~ Z studies, neutron detection adds to reaction-channel selectivity.

[How] will it work with Gretina?Neutron Shell was designed for use with Gammasphere Pulling Gretina back to 60cm improves this to  NS,Gr /  NS,DGS ~ 0.45, but at the cost of  FMA. QUAD At 30cm,  min ~ 55 o and Ndets only on one side   NS,Gr /  NS,DGS ~ 0.2;  FMA,Gr /  FMA,DGS ~ 4. With Gretina at back hemisphere, gain some,  NS,Gr /  NS,DGS ~ 0.3. QUAD Recover forward n’s with a plane of Ndets perpendicular to beamline? [In all cases,  ,Gr /  ,DGS ~ 1 because Ndets do not displace any Ge with Gretina.]

A past example: N = Z 54 Co D. Rudolph et al. 28 Si( 32 S,αpn) E lab =130 MeV 54 Co high-spin parallel transitions low-spin transitions (gate 5524 keV) 54 Co: no hint for collectivity. The Neutron Shell provides selectivity at N ≤ Z Setup: 30 n detectors in Gammasphere

Improved ability for in-beam proton-decay studies Microball → high efficiency CD DSSD →high granularity  E-E capability x x no Ring 4 D. Rudolph et al.

R. Orlandi et al., PRL103, (2009). 40 Ca( 32 S,  n) and 40 Ca( 32 S,  p) Isospin mixing in mirror pairs—relies on comparisons of E1 transitions. Also in N=Z nuclei (should be “forbidden” between states of same T).