shell-model progressganilcolloque.sciencesconf.org/data/n._houda.pdf134te 136xe 138ba 140ce 142nd...
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![Page 1: Shell-model progressganilcolloque.sciencesconf.org/data/N._Houda.pdf134Te 136Xe 138Ba 140Ce 142Nd BE2(2 + -> 0 + ) [e .fm ] N=82 600 800 1000 1200 1400 1600 1800 2000 138Te 140Xe 142Ba](https://reader034.vdocuments.us/reader034/viewer/2022050110/5f47c67c95937267cb0190b8/html5/thumbnails/1.jpg)
Shell-model progressin the investigation of 132Sn mass region
Houda NAÏDJA
In Collaboration with Frédéric NOWACKI
IPHC Strasbourg, FranceLPMS, Université Constantine 1, Algeria.
20th Colloque GANIL 2017Amboise October 15-20, 2017
Houda Naïdja ([email protected]) GANIL 2017 October 15-20 2017 1 / 29
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Introduction
G. S. Simpson et al., PRL 113, 132502 (2014)H. Naïdja et al., J. Phys. Conf. Series 580, 012030 (2015)
H. Naïdja et al., Acta. Phys. Pol B 46, 669 (2015)R. Lozeva et al., PRC 93,014316 (2016)
R. Lozeva et al., PRC 93,014316 (2016)U. Urban et al., PRC 93, 034326 (2016)H. Naïdja et al., PRC 95, 064303 (2017)H. Naïdja et al.,PRC 96, 034312 (2017)
132Sn
2/29
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Introduction
☞ G. S. Simpson et al., PRL 113, 132502 (2014)H. Naïdja et al., J. Phys. Conf. Series 580, 012030 (2015)
H. Naïdja et al., Acta. Phys. Pol B 46, 669 (2015)R. Lozeva et al., PRC 93,014316 (2016)
R. Lozeva et al., PRC 93,014316 (2016)U. Urban et al., PRC 93, 034326 (2016)H. Naïdja et al., PRC 95, 064303 (2017)H. Naïdja et al.,PRC 96, 034312 (2017)
Low-lying state energies and isomeric transitions in 134,136,138Sn
seniority-mixing
3/29
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Introduction
G. S. Simpson et al., PRL 113, 132502 (2014)☞ H. Naïdja et al., J. Phys. Conf. Series 580, 012030 (2015)
☞ H. Naïdja et al., Acta. Phys. Pol B 46, 669 (2015)R. Lozeva et al., PRC 93,014316 (2016)
R. Lozeva et al., PRC 93,014316 (2016)U. Urban et al., PRC 93, 034326 (2016)H. Naïdja et al., PRC 95, 064303 (2017)H. Naïdja et al.,PRC 96, 034312 (2017)
Non sub-shell closure at N=90, and the tins masses
4/29
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Introduction
G. S. Simpson et al., PRL 113, 132502 (2014)H. Naïdja et al., J. Phys. Conf. Series 580, 012030 (2015)
H. Naïdja et al., Acta. Phys. Pol B 46, 669 (2015)☞ R. Lozeva et al., PRC 93,014316 (2016)
☞ R. Lozeva et al., PRC 93,014316 (2016)U. Urban et al., PRC 93, 034326 (2016)H. Naïdja et al., PRC 95, 064303 (2017)H. Naïdja et al.,PRC 96, 034312 (2017)
Revised level scheme of 136Sb, and the first spectroscopic information on 140Sb
5/29
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Introduction
G. S. Simpson et al., PRL 113, 132502 (2014)H. Naïdja et al., J. Phys. Conf. Series 580, 012030 (2015)
H. Naïdja et al., Acta. Phys. Pol B 46, 669 (2015)R. Lozeva et al., PRC 93,014316 (2016)
R. Lozeva et al., PRC 93,014316 (2016)☞ U. Urban et al., PRC 93, 034326 (2016)☞ H. Naïdja et al., PRC 95, 064303 (2017)
H. Naïdja et al.,PRC 96, 034312 (2017)
142Ba 144Ce
High spin states and collectivity in 142Ba and 144Ce
6/29
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Introduction
G. S. Simpson et al., PRL 113, 132502 (2014)H. Naïdja et al., J. Phys. Conf. Series 580, 012030 (2015)
H. Naïdja et al., Acta. Phys. Pol B 46, 669 (2015)R. Lozeva et al., PRC 93,014316 (2016)
R. Lozeva et al., PRC 93,014316 (2016)U. Urban et al., PRC 93, 034326 (2016)H. Naïdja et al., PRC 95, 064303 (2017)
☞ H. Naïdja et al.,PRC 96, 034312 (2017)
spectroscopy and collectivity in Xe, Te, Ba, Ce, Nd nuclei, N=82,84,86
7/29
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Shell-model overview
Model space
☞Diagonalization with Antoine and Nathan
Strasbourg SM codes.
Effective interaction
1 derived from realistic interaction
N3LO
2 renormalised by Vlow−k to exclude
the repulsive short range (cutoff
Λ = 2.2fm−1).
3 adapted to the model space by many
body perturbation theory,
Veff =
Vlow +VlowQ
E −H0
Vlow
︸ ︷︷ ︸
second order
+VlowQ
E−H0Vlow
QE−H0
Vlow
4 Monopole and Multipole adjutments
to N3LO interaction
⇓N3LOP interaction
r5i r4h
8/29
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Part I : Spectroscopy and collectivity in even-even nuclei
Te, Xe, Ba, Ce, Nd with 82 ≤ N ≤ 88
9/29
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Energy levels of Te,Xe,Ba,Ce,Nd 82 ≤ N ≤ 86
H. Naïdja, F. Nowacki and B. Bounthong, PRC 96, 034312 (2017).
0
500
1000
1500
2000
E (
keV
)
134Te 136Te 138Te
Exp SM Exp SM Exp SM0+
2+
4+6+
0+
2+
4+
6+
0+
2+
4+
6+
0+
2+
4+
6+
0+
2+
4+
6+
0+
2+
4+
6+
0
500
1000
1500
2000
E (
keV
)
136Xe 138Xe 140XeExp SM Exp SM Exp SM
0+
2+
4+
6+
0+
2+
4+
6+
0+
2+
4+
6+
0+
2+
4+
6+
0+
2+
4+
6+
0+
2+
4+
6+
0
500
1000
1500
2000
E (
keV
)138Ba 140Ba 142Ba
Exp SM Exp SM Exp SM0+
2+
4+
6+
0+
2+
4+6+
0+
2+
4+
6+
0+
2+
4+
6+
0+
2+
4+
6+
0+
2+
4+
6+
0
500
1000
1500
2000
E (
keV
)
140Ce 142Ce 144CeExp SM Exp SM Exp SM
6+
4+
2+
0+
6+
4+
2+
0+ 0+
2+
4+
6+
0+
2+
4+
6+
0+
2+
4+
6+
0+
2+
4+
6+ 0
500
1000
1500
2000
E (
keV
)
142Nd 144Nd 146NdExp SM Exp SM Exp SM
6+
4+
2+
0+0+
2+
4+6+
0+
2+
4+
6+
0+
2+
4+
6+
0+
2+
4+
6+
0+
2+
4+
6+
A compression in the level schemes from N=82 to N=86 isotones⇓
sign of collectivity
10/29
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E2 Transitions
H. Naïdja, F. Nowacki and B. Bounthong, PRC 96, 034312 (2017).
100
200
300
400
500
600
700
800
900
1000
134Te 136Xe 138Ba 140Ce 142Nd
BE
2(2+ ->
0+ ) [e
.fm]
N=82
600
800
1000
1200
1400
1600
1800
2000
138Te 140Xe 142Ba 144Ce 146Nd
BE
2(2+ ->
0+ ) [e
.fm]
N=86
200
400
600
800
1000
1200
136Te 138Xe 140Ba 142Ce 144Nd
B(E
2;2+ ->
0+ ) (e
2 fm4 )
N=84
600
800
1000
1200
1400
1600
1800
2000
2200
2400
140Te 142Xe 144Ba 146Ce
BE
2(2+ ->
0+ ) [e2 .fm
4 ]
N=88
✓ The overestimated 136Te
strength is now consistent with
the new measurement
J. M. Allmond et al. PRL. 118, 092503 (2017)
✓ small B(E2) in N=82 isotones,
due to spherical character
✓ strong B(E2) in N=86 and 88
isotones, reflecting the
presence of collective
character
(eeff (ν),eeff (π)) = (0.6e,1.6e)
11/29
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M1 Moments
H. Naïdja, F. Nowacki and B. Bounthong, PRC 96, 034312 (2017).
FREE g−FACTORS
(gsπ ,g
lπ) = (5.5857,1.0)
(gsν ,g
lν) = (−3.8263,0.0)
☞ overall bad agreement with the data
EFFECTIVE g-FACTORS
(gsπ ,g
lπ) = (3.250,1.069)
(gsν ,g
lν) = (−1.506,0.019)
☞ overall good agreement with the data
µ(2+,4+,6+)
-1
0
1
2
3
4
5
6
7
8
134Te136Xe136Xe138Ba138Ba138Ba142Ba140Ce140Ce142Ce146Ce142Nd144Nd146Nd
µ [µ N
]
expg free
12/29
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M1 Moments
H. Naïdja, F. Nowacki and B. Bounthong, PRC 96, 034312 (2017).
FREE g−FACTORS
(gsπ ,g
lπ) = (5.5857,1.0)
(gsν ,g
lν) = (−3.8263,0.0)
☞ overall bad agreement with the data
EFFECTIVE g-FACTORS
(gsπ ,g
lπ) = (3.250,1.069)
(gsν ,g
lν) = (−1.506,0.019)
☞ overall good agreement with the data
µ(2+,4+,6+)
-1
0
1
2
3
4
5
6
7
8
134Te136Xe136Xe138Ba138Ba138Ba142Ba140Ce140Ce142Ce146Ce142Nd144Nd146Nd
µ (µ N
)
gfreegeffExp
13/29
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Signs of Collectivity in N=86, 88 isotones
H. Naïdja, F. Nowacki and B. Bounthong, PRC 96, 034312 (2017).
0
500
1000
1500
2000
2500
52 54 56 58 60 52 54 56 58 60 52 54 56 58 60 52 54 56 58
BE
2(2+ ->
0+ ) [e2 .fm
4 ]
Z
N=82N=84N=86N=88
-100
-80
-60
-40
-20
0
20
40
60
80
100
138Te140Te140Xe142Xe142Ba144Ba144Ce146Ce146Nd
Q [e
.fm2 ]
21+
22+
-100
-50
0
50
100138Te140Te140Xe142Xe142Ba144Ba144Ce146Ce146Nd
Q(3+ )[
e.fm
2 ]
0
500
1000
1500
2000
2500
3000
3500
4000
138Te140Te140Xe142Xe142Ba144Ba144Ce146Ce146Nd
BE
2(3+ ->
2 2+ )[e2 .fm
4 ]
14/29
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Signs of Collectivity in N=86, 88 isotones
H. Naïdja, F. Nowacki and B. Bounthong, PRC 96, 034312 (2017).
0
500
1000
1500
2000
2500
52 54 56 58 60 52 54 56 58 60 52 54 56 58 60 52 54 56 58
BE
2(2+ ->
0+ ) [e2 .fm
4 ]
Z
N=82N=84N=86N=88
-100
-80
-60
-40
-20
0
20
40
60
80
100
138Te140Te140Xe142Xe142Ba144Ba144Ce146Ce146Nd
Q [e
.fm2 ]
21+
22+
-100
-50
0
50
100138Te140Te140Xe142Xe142Ba144Ba144Ce146Ce146Nd
Q(3+ )[
e.fm
2 ]
0
500
1000
1500
2000
2500
3000
3500
4000
138Te140Te140Xe142Xe142Ba144Ba144Ce146Ce146Nd
BE
2(3+ ->
2 2+ )[e2 .fm
4 ]
0
500
1000
1500
2000
2500
52 54 56 58 60 52 54 56 58 60 52 54 56 58 60 52 54 56 58
BE
2(2+ ->
0+ ) [e2 .fm
4 ]
Z
N=82N=84N=86N=88
Strong BE2 tarnsitions
15/29
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Signs of Collectivity in N=86, 88 isotones
H. Naïdja, F. Nowacki and B. Bounthong, PRC 96, 034312 (2017).
0
500
1000
1500
2000
2500
52 54 56 58 60 52 54 56 58 60 52 54 56 58 60 52 54 56 58
BE
2(2+ ->
0+ ) [e2 .fm
4 ]
Z
N=82N=84N=86N=88
-100
-80
-60
-40
-20
0
20
40
60
80
100
138Te140Te140Xe142Xe142Ba144Ba144Ce146Ce146Nd
Q [e
.fm2 ]
21+
22+
-100
-50
0
50
100138Te140Te140Xe142Xe142Ba144Ba144Ce146Ce146Nd
Q(3+ )[
e.fm
2 ]
0
500
1000
1500
2000
2500
3000
3500
4000
138Te140Te140Xe142Xe142Ba144Ba144Ce146Ce146Nd
BE
2(3+ ->
2 2+ )[e2 .fm
4 ]
0
500
1000
1500
2000
2500
3000
3500
Te Xe Ba Ce Nd
E(2
2+ ) [k
eV]
N=82N=84N=86N=88
Very low-lying 2+2 energy state
16/29
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Signs of Collectivity in N=86, 88 isotones
H. Naïdja, F. Nowacki and B. Bounthong, PRC 96, 034312 (2017).
0
500
1000
1500
2000
2500
52 54 56 58 60 52 54 56 58 60 52 54 56 58 60 52 54 56 58
BE
2(2+ ->
0+ ) [e2 .fm
4 ]
Z
N=82N=84N=86N=88
-100
-80
-60
-40
-20
0
20
40
60
80
100
138Te140Te140Xe142Xe142Ba144Ba144Ce146Ce146Nd
Q [e
.fm2 ]
21+
22+
-100
-50
0
50
100138Te140Te140Xe142Xe142Ba144Ba144Ce146Ce146Nd
Q(3+ )[
e.fm
2 ]
0
500
1000
1500
2000
2500
3000
3500
4000
138Te140Te140Xe142Xe142Ba144Ba144Ce146Ce146Nd
BE
2(3+ ->
2 2+ )[e2 .fm
4 ]
-100
-80
-60
-40
-20
0
20
40
60
80
100
138Te140Te140Xe142Xe142Ba144Ba144Ce146Ce146Nd
Q [e
.fm2 ]
21+
22+
Q(2+γ ) =−Q(2+
yrast )
17/29
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Signs of Collectivity in N=86, 88 isotones
H. Naïdja, F. Nowacki and B. Bounthong, PRC 96, 034312 (2017).
0
500
1000
1500
2000
2500
52 54 56 58 60 52 54 56 58 60 52 54 56 58 60 52 54 56 58
BE
2(2+ ->
0+ ) [e2 .fm
4 ]
Z
N=82N=84N=86N=88
-100
-80
-60
-40
-20
0
20
40
60
80
100
138Te140Te140Xe142Xe142Ba144Ba144Ce146Ce146Nd
Q [e
.fm2 ]
21+
22+
-100
-50
0
50
100138Te140Te140Xe142Xe142Ba144Ba144Ce146Ce146Nd
Q(3+ )[
e.fm
2 ]
0
500
1000
1500
2000
2500
3000
3500
4000
138Te140Te140Xe142Xe142Ba144Ba144Ce146Ce146Nd
BE
2(3+ ->
2 2+ )[e2 .fm
4 ]
-100
-50
0
50
100138Te140Te140Xe142Xe142Ba144Ba144Ce146Ce146Nd
Q(3+ )[
e.fm
2 ]Q(3+) = 0
18/29
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Signs of Collectivity in N=86, 88 isotones
H. Naïdja, F. Nowacki and B. Bounthong, PRC 96, 034312 (2017).
0
500
1000
1500
2000
2500
52 54 56 58 60 52 54 56 58 60 52 54 56 58 60 52 54 56 58
BE
2(2+ ->
0+ ) [e2 .fm
4 ]
Z
N=82N=84N=86N=88
-100
-80
-60
-40
-20
0
20
40
60
80
100
138Te140Te140Xe142Xe142Ba144Ba144Ce146Ce146Nd
Q [e
.fm2 ]
21+
22+
-100
-50
0
50
100138Te140Te140Xe142Xe142Ba144Ba144Ce146Ce146Nd
Q(3+ )[
e.fm
2 ]
0
500
1000
1500
2000
2500
3000
3500
4000
138Te140Te140Xe142Xe142Ba144Ba144Ce146Ce146Nd
BE
2(3+ ->
2 2+ )[e2 .fm
4 ]
0
500
1000
1500
2000
2500
3000
3500
4000
138Te140Te140Xe142Xe142Ba144Ba144Ce146Ce146Nd
BE
2(3+ ->
2 2+ )[e2 .fm
4 ]strong B(E2,3+ → 2+
2 )
19/29
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Signs of Collectivity in N=86, 88 isotones
H. Naïdja, F. Nowacki and B. Bounthong, PRC 96, 034312 (2017).
0
500
1000
1500
2000
2500
52 54 56 58 60 52 54 56 58 60 52 54 56 58 60 52 54 56 58
BE
2(2+ ->
0+ ) [e2 .fm
4 ]
Z
N=82N=84N=86N=88
-100
-80
-60
-40
-20
0
20
40
60
80
100
138Te140Te140Xe142Xe142Ba144Ba144Ce146Ce146Nd
Q [e
.fm2 ]
21+
22+
-100
-50
0
50
100138Te140Te140Xe142Xe142Ba144Ba144Ce146Ce146Nd
Q(3+ )[
e.fm
2 ]
0
500
1000
1500
2000
2500
3000
3500
4000
138Te140Te140Xe142Xe142Ba144Ba144Ce146Ce146Nd
BE
2(3+ ->
2 2+ )[e2 .fm
4 ]
Features of K=2 triaxial γ-band
20/29
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Deformation parametersβ deformation parameter and γ angle∗
0
5
10
15
20
25
30
0.1 0.12 0.14 0.16 0.18 0.2
γ an
gle
[°]
β
140Te
142Xe
144Ba146Ce
138Te
140Xe142Ba
144Ce
146Nd
Mild deformation in 138Te and 140Te.
Increase in deformation with non-axiality from 140Xe to 146Nd.
The maximum of the collectivity in 144Ba and 146Ce
(*) K. Kumar, PRL 28, 249 (1972) 21/29
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SU(3) symmetries vs collectivity
500
1000
1500
2000
2500
138Te 140Xe 142Ba 144Ce 146Nd
BE
2(2+ ->
0+ ) [e2 .fm
4 ]
Expr4h-r5i
qp-SU(3)
minor impact of pseudo-SU(3) / quasi-SU(3)
Excitations to πh11/2 reduce the collectivity due to the pairing effect,
which confirms our previous conclusion in 140Sm analysis with 100Sn core
M.Klintefjord, et al, PRC 93, 054303 (2016)
qu
asi-
SU
(3)
pse
ud
o-S
U(3
)
22/29
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PES with CHFSM
012345678910
0
10
20
30
40
5060
(deg)γ
β
138Te
0 0.03 0.06 0.09 0.12 0.15
0
0.03
0.06
0.09
0.12
0.15 (MeV)
012345678910
0
10
20
30
40
5060
(deg)γ
β
140Xe
0 0.04 0.08 0.12 0.16
0
0.04
0.08
0.12
0.16 (MeV)
012345678910
5
3
3 1
0
10
20
30
40
5060
(deg)γ
β
144Ce
0 0.06 0.12 0.18 0.24
0
0.06
0.12
0.18
0.24 (MeV)
012345678910
97
53
3 1
0
10
20
30
40
5060
(deg)γ
β
142Ba
0 0.06 0.12 0.18 0.24
0
0.06
0.12
0.18
0.24 (MeV)
012345678910
0
10
20
30
40
5060
(deg)γ
β
146Nd
0 0.06 0.12 0.18 0.24
0
0.06
0.12
0.18
0.24 (MeV)
Presence of triaxial minima
CHFSM is an approach developped by Strasbourg SM group :B. Bounthong, PhD Thesis, Université de Strasbourg (2016)
The same SM Hamiltonian (N3LOP) and the same model space (r4h-r5i) are used
(β ,γ) are consistent with Kumar23/29
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Part II : Even-odd and odd-even nuclei
24/29
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odd-even nuclei : Sb, I, Cs, La
0
200
400
600
800
1000
1200
E(k
eV)
Exp VlowN3LOP
135Sb
(7/2+)
(5/2+)
(3/2+)
(9/2+)
(11/2+)
(1/2+)
7/2+
5/2+
3/2+
9/2+
11/2+
1/2+
7/2+
5/2+
3/2+
9/2+
11/2+
1/2+
0
500
1000
1500
2000
E(k
eV)
Exp Exp SMSM
135I 137I
(7/2+)
(5/2)+
(11/2+)(9/2+)
7/2+
5/2+
11/2+9/2+
(7/2+)
5/2+
9/2+11/2+
13/2+
7/2+
5/2+
9/2+11/2+
(13/2+)
0
500
1000
1500
2000
E(k
eV)
Exp Exp SMSM
137Cs 139Cs
7/2+
5/2+
(11/2+)
1/2+
(15/2+)
7/2+
5/2+
11/2+
1/2+
15/2+
7/2+
5/2+,7/2+3/2+,5/2+,7/2+
(9/2+)(11/2+)
(13/2+)(15/2+)
7/2+
5/2+3/2+
9/2+1/2+
13/2+15/2+
0
500
1000
1500
2000
E(k
eV)
Exp Exp SMSM
139La 141La
7/2+
5/2+
9/2+
(13/2+)
1/2+
7/2+
5/2+
9/2+
13/2+
1/2+
(7/2+)
(5/2+)
(3/2+)(1/2+)
7/2+
5/2+
3/2+
1/2+
25/29
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odd-even nuclei : Sb, I, Cs, La
0
200
400
600
800
1000
1200
E(k
eV)
Exp VlowN3LOP
135Sb
(7/2+)
(5/2+)
(3/2+)
(9/2+)
(11/2+)
(1/2+)
7/2+
5/2+
3/2+
9/2+
11/2+
1/2+
7/2+
5/2+
3/2+
9/2+
11/2+
1/2+
0
500
1000
1500
2000
E(k
eV)
Exp Exp SMSM
135I 137I
(7/2+)
(5/2)+
(11/2+)(9/2+)
7/2+
5/2+
11/2+9/2+
(7/2+)
5/2+
9/2+11/2+
13/2+
7/2+
5/2+
9/2+11/2+
(13/2+)
0
500
1000
1500
2000
E(k
eV)
Exp Exp SMSM
137Cs 139Cs
7/2+
5/2+
(11/2+)
1/2+
(15/2+)
7/2+
5/2+
11/2+
1/2+
15/2+
7/2+
5/2+,7/2+3/2+,5/2+,7/2+
(9/2+)(11/2+)
(13/2+)(15/2+)
7/2+
5/2+3/2+
9/2+1/2+
13/2+15/2+
0
500
1000
1500
2000
E(k
eV)
Exp Exp SMSM
139La 141La
7/2+
5/2+
9/2+
(13/2+)
1/2+
7/2+
5/2+
9/2+
13/2+
1/2+
(7/2+)
(5/2+)
(3/2+)(1/2+)
7/2+
5/2+
3/2+
1/2+
0
200
400
600
800
1000
1200
E(k
eV)
Exp VlowN3LOP
135Sb
(7/2+)
(5/2+)
(3/2+)
(9/2+)
(11/2+)
(1/2+)
7/2+
5/2+
3/2+
9/2+
11/2+
1/2+
7/2+
5/2+
3/2+
9/2+
11/2+
1/2+
26/29
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even-odd nuclei : Te, Xe, Ba, Ce
0
200
400
600
800
1000
1200
1400
1600
E(k
eV)
Exp Exp SMSM137Te 139Te
(7/2-)
(3/2-)
(1/2-)(5/2-)(11/2-)(9/2-)
7/2-
3/2-
1/2-
5/2-
11/2-
9/2-
(7/2-)
(11/2-)
(13/2-)(15/2-)
7/2-
11/2-
13/2-15/2-
0
200
400
600
800
1000
1200
1400
1600
E(k
eV)
Exp Exp SMSM137Xe 139Xe
7/2-
3/2-
(1/2)-
9/2-5/2-
7/2-
3/2-
1/2-
9/2-5/2-
3/2-(7/2-)(5/2-)
(9/2-)
3/2-
7/2-
5/2-
9/2-
0
200
400
600
800
1000
1200
1400
1600
1800
E(k
eV)
Exp Exp SMSM139Ba 141Ba
7/2-
3/2-
(1/2)-
9/2-
5/2-
7/2-
3/2-
1/2-
9/2-
5/2-
3/2-(5/2-)(7/2-)
(9/2-)(11/2-)
(13/2-)
3/2-5/2-7/2-
9/2-11/2-
13/2-
0
200
400
600
800
1000
1200
1400
1600
1800
E(k
eV)
Exp Exp SMSM141Ce 143Ce
7/2-
3/2-
1/2-
9/2-13/2+
5/2-
7/2-
3/2-
1/2-9/2-13/2+
5/2-
3/2-7/2-5/2-
9/2-
3/2-5/2-7/2-
9/2-
27/29
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Magnetic dipole momentµGS(7/2+,7/2−,3/2−)
-4
-2
0
2
4
135I 137Cs139Cs139La135Te137Xe139Xe139Ba141Ba141Ce143Ce
µ [µ N
]
Expgeff
gfree
using the effective g factors the agreement with the data is far more
satisfying than using the free g factors.
a disagreement in µ(7/2−) of 141Ce remains unexplained.
28/29
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Conclusions and Perspectives
✓ Our results achieved using N3LOP are in good agreement compared tothe data.
✓ First signs of the collectivity in the N=86,88 isotones was shown, with the
signature of triaxial γ band.
✓ Evolution of the collectivity is sensitive to SU(3) symmetries of neutrons
and protons orbits sequence and to the excitations to h11/2
✓ These applications constitute a stringent test of N3LOP interaction, and
our predictions are a benchmark for future experimental measurements.
☞ Extension of the calculations to higher mass number along isotopic and
isotonic chains☞ Explore the octupole correlations
29/29