A fair number of results from GSI

Structure and Reactions of Exotic
Nuclei
Pisa, 24-26 February 2005
A fair number of results
from GSI
Structure and Reactions of Exotic
Nuclei
Pisa, 24-26 February 2005
A FAIR number of results
from GSI
6Li
7Li
8Li
9Li 10Li 11Li
--
-d
840 ms
179 ms
unbound
8.5 ms
3He 4He 5He 6He 7He 8He 9He
--
--
1H
2H
3H
---
--
12.3 y
unbound
808 ms
unbound
119 ms
unbound
1936
n
10.25 m
9Be
+ n  6He + 4He
Pisa, Feb. 24, 2005
BGT= 4.75
F. Ajzenberg-Selove, NPA490 (1988) 1
Pisa, Feb. 24, 2005
6He
Tanihata et al., PLB 160 (1985) 380
Pisa, Feb. 24, 2005
Neutron Halo
6He
a
Borromean
Pisa, Feb. 24, 2005
Beta-Delayed Deuterons
Qbd = 3.007 – S2n Mev
a+d
Anthony et al., PRC 64 (2002) 034301
6Li
M.V. Zhukov et al., PRC47 (1993) 2937
D. Baye et al., Prog. Th. Phys. 91 (1994) 271
F.C. Baker, Phys. Lett. B 322 (1994) 17
Intensity (decay -1 MeV -1)
6He
b-
10-4
10-5
10-6
0
0
500
1000
Ed (keV)
M.J.G. Borge et al., Nucl. Phys. A560 (1993) 664
Pisa, Feb. 24, 2005
6He
Spin Alignment
L.V. Chulkov et al.,
PRL 79 (1997) 201
p(5He)= pa + pn2 = -pn1
a
5He
an
n2
W(an )  1  1.5 cos2 (an )
GSI
Pisa, Feb. 24, 2005
Two-neutron exchange in the
6He+4He reaction
DUBNA
G.M. Ter-Akopian et al.,
Phys. Lett. B 426 (1998) 251
Yu. Ts. Oganessian et al., PRL 82 (1999) 4996
Pisa, Feb. 24, 2005
6He
36 MeV/u
JINR, Dubna
1H(6He,pp)5H
A.A. Korsheninnikov et al.,
PRL87(01)092501
beam
240 MeV/u
GSI, Darmstadt
One-proton knockout
M. Meister et al.,
NPA 723(03)13
Pisa, Feb. 24, 2005
6He
+
238U
R. Raabe, J.L. Sida et al. Nature 431 (2004) 823
Pisa, Feb. 24, 2005
CERN: b-beam baseline scenario
6He
Nuclear
Physics
→6Li
+
e-
_
+

Decay ring
Brho = 1500 Tm
SPL
B=5T
Lss = 2500 m
6
2
Decay
ISOL target
& Ion source
He 36Li e -
Average Ecms  1.937 MeV
Ring
SPS
18
10
Ne189Fe e 
Average Ecms  1.86 MeV
ECR
Cyclotrons,
linac or FFAG
Rapid
cycling
synchrotron
PS

C. Volpe, Proc. INPC2004
Pisa, Feb. 24, 2005
Experimental Studies at the Driplines
Pisa, Feb. 24, 2005
N=16
N=6, 16
T. Otsuka et al., PRL 87(01)082502
A. Ozawa et al.,, PRL 84 (2000) 5493
Pisa, Feb. 24, 2005
Light dripline nuclei
N=16
7H
unbound
N=6
Pisa, Feb. 24, 2005
D. Cortina-Gil, et al.
PRL 93 (2004) 062501
19O
20O
21O
22O 23O 24O
GANIL
GSI
N =14
N =16
Stanoiu et al.,
PRC 69 (04) 034312
24O (29Ne)
fp
d3/2
20
16
s1/2
S=0.97(19)
1s1 / 2 22 O(0  )
d5/2
n
p
d5/2
empty
Pisa, Feb. 24, 2005
11Be
12Be
13Be
14Be
13.8 s
23.6 ms
806 ms
4.35 ms
9Li
10Li
11Li
179 ms
806 ms
8.5 ms
6He
7He
8He
9He
806 ms
806 ms
119 ms
806 ms
Vnn
N=8
VCn
VCn
Bound
Unbound
Pisa, Feb. 24, 2005
GSI, 287 MeV/u
H. Simon et al.,
11Li
(1s1/2)2 = 45(10) %
PRL 83 (1999) 496
Pisa, Feb. 24, 2005
12
4 Be 8
(12Be,11Be+g)
Breakdown of the
N=8
Deformation
12Be (p,p’)12Be*(2+)
d = 2.00(23) fm
shell closure
Iwasaki et al., PLB 481 (00) 7
RIKEN
Low-lying 1- state
Spectroscopic factors
Navin et al. PRL 85(00)266
MSU
B(E1) = 0.051(13) e2fm2
Iwasaki et al., EPJ A13 (02) 55
2.68 MeV
(1s2+0d2)
Pisa, Feb. 24, 2005
12
4 Be 8
0 + 2 +  0 +
Isomeric 0+ state at 2.24 MeV
12mBe 12Be*(2+) 12Be
RIKEN
Shimoura et al., PLB 560 (2003) 31
Pisa, Feb. 24, 2005
d
A E

d (E - E' ) 2  E  (G/2)2
Simon et al.
0
Relative velocity
E
Er=0.68(10) MeV
2
2 a s2
Chen et al., PLB 505(2001)21
9Li(d,p)10Li
REX ISOLDE
Er = 0.77(24) MeV
Santi et al., PRC 67(03) 024606
Pisa, Feb. 24, 2005
28 MeV/u
11Be
(11Be,8He+n)
9He
Pisa, Feb. 24, 2005
The N=7 Isotones
Pisa, Feb. 24, 2005
11Be
12Be
13Be
14Be
13.8 s
23.6 ms
806 ms
4.35 ms
9Li
10Li
11Li
179 ms
806 ms
8.5 ms
6He
7He
8He
9He
806 ms
806 ms
119 ms
806 ms
C. Forssén et al., NPA 706 (02) 48
?
Borromean
Five-body
Pisa, Feb. 24, 2005
13Be
s-wave resonance ?
W ( nf )  1 - 0.37 cos( nf )  0.44 cos 2 ( nf )
Pisa, Feb. 24, 2005
A. Bonaccorso, ENAM 2004
and IFUP-TH 29/2004
Pisa, Feb. 24, 2005
10Be
1.6.106 a
9Li
178 ms
8He
119 ms
COSMA Valence
neutrons in the
p3/2 shell
7H
unbound
Korsheninnikov et al.
PRL 90(03) 082501
Zhukov et al., PRC 50 (94) R1
Pisa, Feb. 24, 2005
The 6He (2+) +2n component in 8He
Markenroth et al., NPA679 (01) 462
σ -1n  σ T n P(R cut )
σ calc
-1n  316 mb
mb
σ exp
-1n  129(15)
45% 6He(2+) +2n(p3/2,p1/2)
Markenroth et al.,
NPA 679 (01) 462
8He+4He
Wolski et al., NPA 701 (02) 29c
Korshenninikov et al., PRL 90(03) 082501
Pisa, Feb. 24, 2005
Pisa, Feb. 24, 2005
GSI
936 MeV/u 8B
 -exc
1p
 -total
1p
R
R=0.13
R=0.085
C
Pb
Rth ( Pb)  0.113
D. Cortina-Gil et al.,
NPA 720(2003) 3
Pisa, Feb. 24, 2005
8B
C and Pb targets.
Combined data give
13.3(2.2) %
for the
7Be*(1/2-)p(3/2-)
component in the
8B ground state
wavefunction
D. Cortina et al.,
PLB 529(2002) 36
(C)
and NPA 720(2003) 3 (C, Pb)
Pisa, Feb. 24, 2005
6He(240
MeV/u) + Pb
1 – 3 MeV
Danilin et al., NPA 632(98) 383
Pisa, Feb. 24, 2005
Danilin et al., NPA 632(98) 383
............
Pisa, Feb. 24, 2005
Ewald et al., PRL 93 (04)113002
11Li:
+ 30 %
Pisa, Feb. 24, 2005
S 245
Pisa, Feb. 24, 2005
S245 beams and identified reaction products
Pisa, Feb. 24, 2005
Pisa, Feb. 24, 2005
Pisa, Feb. 24, 2005
...independent of the value
which, after a possible
confirmation, may be attributed
to the theory of relativity and
gravitation give the prize, which
for 1921......
...for his contributions to the
theoretical physics and
especially for his discovery of
the law for the photoelectric
effect.
Pisa, Feb. 24, 2005
From “Remembering miss Meitner” by Robert Marc
Friedman played during
INPC2004, Göteborg, June 27- July 2 2004.
...How could one woman stop them? The
future was theirs. By then science was no
longer what it had once been. Money, fame,
prizes, and intrigues – that was not what I
devoted my life to. I gladly gave up much
for that which I love most. Physics is my
great love. My only love. It is the work
itself… to work together, to be part of a
community. What matters most is the
beauty of the results; the respect we share.
I would do it all over again and again and
again. I am lucky. I participated in a great
adventure…. to research… to discover…
And I became – a snow angel!
Inger Hayman as Lise Meitner