SLIDE 1
The e de decay pattern tern of
- f the PDR in 128
Wh What is is the Pygmy gmy Di Dipo pole le Res esonance ance ?
Johann Isaak | COMEX5 | Krakow 2015 2
using the -set etup up Johann ann Is Isaak ak ExtreMe Matter - - PowerPoint PPT Presentation
using the -set etup up Johann ann Is Isaak ak ExtreMe Matter - - PowerPoint PPT Presentation
of the PDR in 128 128 Te The e de decay pattern tern of Te using the -set etup up Johann ann Is Isaak ak ExtreMe Matter Institute EMMI and Research Division, GSI The 5th international conference on Collective Motion in
SLIDE 2
SLIDE 3
Johann Isaak | COMEX5 | Krakow 2015 3
0+ 21
+
1± Γ0
Nucl clear ear Reso sona nanc nce Fluores
- rescence
cence (NRF) F)
Ho How to to inve vest stigate igate the the Pygmy my Di Dipole
- le Re
Reso sonance ance ?
SLIDE 4
Johann Isaak | COMEX5 | Krakow 2015 4
0+ 21
+
1± Γ0 Γ0 Γ𝑗
Nucl clear ear Reso sona nanc nce Fluores
- rescence
cence (NRF) F)
Ho How to to inve vest stigate igate the the Pygmy my Di Dipole
- le Re
Reso sonance ance ?
SLIDE 5
Johann Isaak | COMEX5 | Krakow 2015 5
0+ 21
+
1± Γ0 Γ0 Γ𝑗
Nucl clear ear Reso sona nanc nce Fluores
- rescence
cence (NRF) F)
Ho How to to inve vest stigate igate the the Pygmy my Di Dipole
- le Re
Reso sonance ance ?
selective to J=1 states model independent low se sensiti sitivit vity fo for sm small ll 𝚫𝒋
- spin
- parity
- transition strength
SLIDE 6
Johann Isaak | COMEX5 | Krakow 2015 6
0+ 21
+
1± Γ0
Nucl clear ear Reso sona nanc nce Fluores
- rescence
cence (NRF) F)
γ-γ coincid ncidence ence at HI HIγS γ3- se setup up →
SLIDE 7
Johann Isaak | COMEX5 | Krakow 2015 7
0+ 21
+
1± Γ0 Γ0
Nucl clear ear Reso sona nanc nce Fluores
- rescence
cence (NRF) F)
γ-γ coincid ncidence ence at HI HIγS γ3- se setup up →
SLIDE 8
Johann Isaak | COMEX5 | Krakow 2015 8
0+ 21
+
1± Γ0 Γ0
Nucl clear ear Reso sona nanc nce Fluores
- rescence
cence (NRF) F)
γ-γ coincid ncidence ence at HI HIγS γ3- se setup up →
γ-γ coincidence
SLIDE 9
Johann Isaak | COMEX5 | Krakow 2015 9
0+ 21
+
1± Γ0 Γ0
Nucl clear ear Reso sona nanc nce Fluores
- rescence
cence (NRF) F)
γ-γ coincid ncidence ence at HI HIγS γ3- se setup up →
γ-γ coincidence
SLIDE 10
- B. Löher et al., NIMA 723
723 (2013) 136
γ3- se
setup up
Johann Isaak | COMEX5 | Krakow 2015 10
SLIDE 11
- B. Löher et al., NIMA 723
723 (2013) 136
γ3- se
setup up
Johann Isaak | COMEX5 | Krakow 2015 11
SLIDE 12
LaBr LaBr
combination of:
- high energy resolution HPGe
- high efficiency LaBr
- B. Löher et al., NIMA 723
723 (2013) 136
γ3- se
setup up
Johann Isaak | COMEX5 | Krakow 2015 12
SLIDE 13
LaBr LaBr
combination of:
- high energy resolution HPGe
- high efficiency LaBr
close setup geometry total photopeak efficiency
- LaBr ~ 6 %
- HPGe ~ 1.5 %
- B. Löher et al., NIMA 723
723 (2013) 136
γ3- se
setup up
Johann Isaak | COMEX5 | Krakow 2015 13
SLIDE 14
high energy resolution state-to-state analysis
Single le γ-ray ay sp spec ectroscopy troscopy on 128
128Te
Te
Johann Isaak | COMEX5 | Krakow 2015 14
SLIDE 15
high energy resolution state-to-state analysis high photopeak efficiency average quantities
Single le γ-ray ay sp spec ectroscopy troscopy on 128
128Te
Te
Johann Isaak | COMEX5 | Krakow 2015 15
SLIDE 16
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
ELaBr (MeV) ELaBr (MeV)
128Te → E=6.9 MeV
γ-γ coincid ncidence ence on 128
128Te
Te
Johann Isaak | COMEX5 | Krakow 2015 16
SLIDE 17
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
ELaBr (MeV) ELaBr (MeV)
128Te → E=6.9 MeV
γ-γ coincid ncidence ence on 128
128Te
Te
Johann Isaak | COMEX5 | Krakow 2015 17
SLIDE 18
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
ELaBr (MeV) ELaBr (MeV)
0.6 0.8 1.0 1.4 1.2 1.8 1.6 2.0 2 3 4 5 6 7 8
ELaBr (MeV) ELaBr (MeV)
128Te → E=6.9 MeV
γ-γ coincid ncidence ence on 128
128Te
Te
Johann Isaak | COMEX5 | Krakow 2015 18
SLIDE 19
Johann Isaak | COMEX5 | Krakow 2015 19
γ-γ coincid ncidence ence on 128
128Te
Te
SLIDE 20
Johann Isaak | COMEX5 | Krakow 2015 20
γ-γ coincid ncidence ence on 128
128Te
Te
SLIDE 21
12 128Te 8Te
preliminary
Johann Isaak | COMEX5 | Krakow 2015 21
γ-γ coincid ncidence ence on 128
128Te
Te
SLIDE 22
743 keV
12 128Te 8Te
preliminary
01
+
21
+
1±
743 keV
Johann Isaak | COMEX5 | Krakow 2015 22
γ-γ coincid ncidence ence on 128
128Te
Te
SLIDE 23
743 keV
12 128Te 8Te
preliminary
1± → 21
+
↓
01
+
21
+
1±
743 keV
Johann Isaak | COMEX5 | Krakow 2015 23
γ-γ coincid ncidence ence on 128
128Te
Te
SLIDE 24
743 keV
12 128Te 8Te
preliminary
1± → 21
+
↓
01
+
21
+
1±
743 keV
Johann Isaak | COMEX5 | Krakow 2015 24
γ-γ coincid ncidence ence on 128
128Te
Te
SLIDE 25
coincidence
preliminary
Johann Isaak | COMEX5 | Krakow 2015 25
γ-γ coincid ncidence ence on 128
128Te
Te
SLIDE 26
no coincidence coincidence
preliminary preliminary
Johann Isaak | COMEX5 | Krakow 2015 26
γ-γ coincid ncidence ence on 128
128Te
Te
SLIDE 27
b1 = I1±→21
+
Ielast
preliminary
Sn
Johann Isaak | COMEX5 | Krakow 2015 27
γ-γ coincid ncidence ence on 128
128Te
Te
SLIDE 28
- V. Yu. Ponomarev, private communication
- B. Löher, doctoral thesis (2014)
140Ce
Johann Isaak | COMEX5 | Krakow 2015 28
γ-γ coincid ncidence ence on 140
140Ce
Ce
SLIDE 29
- V. Yu. Ponomarev, private communication
- B. Löher, doctoral thesis (2014)
140Ce
Johann Isaak | COMEX5 | Krakow 2015 29
γ-γ coincid ncidence ence on 140
140Ce
Ce
SLIDE 30
- V. Yu. Ponomarev, private communication
- B. Löher, doctoral thesis (2014)
140Ce
Johann Isaak | COMEX5 | Krakow 2015 30
γ-γ coincid ncidence ence on 140
140Ce
Ce
SLIDE 31
- V. Yu. Ponomarev, private communication
- B. Löher, doctoral thesis (2014)
140Ce
Johann Isaak | COMEX5 | Krakow 2015 31
γ-γ coincid ncidence ence on 140
140Ce
Ce
coupling between PDR and low-lying states well described
SLIDE 32
B. . Löher, , D. Savran and J. Silva va
ExtreMe Matter Institute EMMI and Research Division, GSI
- T. Aumann,
, T. Beck, , J. . Beller, , U. Gayer, , N. . Pietral alla la, , C. Romig ig, ,
- H. Schei
eit, , V.
- V. Werner
er and M. Zweidin dinger ger
Institut für Kernphysik, TU Darmstadt
W. . Tornow
- w and H.R.
. Weller er
Department of Physics , Duke University, Durham, USA This work was supported by the Alliance Program of the Helmholtz Association (HA216/EMMI) and by the Deutsche Forschungsgemeinschaft (SFB 634 and ZI 510/4-2)
- V. Derya and A. Zilge
ges
Institut für Kernphysik, Universität zu Köln
- M. Scheck
eck
School of Engineering, UWS, Paisley, UK & SUPA, Glasgow, UK
- N. Cooper
er
Yale University, New Haven, USA
Than ank you fo for your atte tention ntion !
Johann Isaak | COMEX5 | Krakow 2015 32
SLIDE 33
Co Comm mmiss ssion
- nin
ing with th 32
32S
Johann Isaak | COMEX5 | Krakow 2015 33
5894 keV 2230 keV Singles: 0.197(3) Singles: 1.03(2) peak to background
SLIDE 34
Co Comm mmiss ssion
- nin
ing with th 32
32S
Johann Isaak | COMEX5 | Krakow 2015 34
5894 keV 2230 keV Singles: 0.197(3) Singles: 1.03(2) peak to background Energy ergy Cu Cut: t: 9. 9.6( 6(15 15) Energy ergy Cu Cut: t: 11 11.7( 7(13 13)
SLIDE 35
http://www.nndc.bnl.gov
beam time 2012: 40Ca, 76Ge, 124Sn, 140Ce,156Gd beam time 2013: 92,94Zr, 128Te, 152,156Gd, 162,164Dy, 206Pb beam time 2014/2015:
150Sm, 54Fe, 50Ti, 52Cr
Pygmy Dipole Resonance Scissors mode Mixed-symmetry state Two-phonon state
Expe perimental rimental camp mpaigns aigns usi sing the e γ3- se setup up
Johann Isaak | COMEX5 | Krakow 2015 35
SLIDE 36
Johann Isaak | COMEX5 | Krakow 2015 36
Single le γ-ray ay sp spec ectroscopy troscopy on 128
128Te
Te
SLIDE 37
Johann Isaak | COMEX5 | Krakow 2015 37
Single le γ-ray ay sp spec ectroscopy troscopy on 128
128Te
Te
SLIDE 38
... with linearly polarized photons E1 E1 M1 M1
- N. Pietralla et al., PRL (2001) 012502
distinguish between E1 & M1 transition
Johann Isaak | COMEX5 | Krakow 2015 38