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

1936

9Be + n 6He + 4He

n10.25 m

2H--

3He--

1H---

3H12.3 y

4He--

5Heunbound

6He808 ms

7Heunbound

8He119 ms

9Heunbound

7Li-d

8Li840 ms

9Li179 ms

10Liunbound

11Li8.5 ms

6Li--

Pisa, Feb. 24, 2005

F. Ajzenberg-Selove, NPA490 (1988) 1

BGT= 4.75

Pisa, Feb. 24, 2005

Tanihata et al., PLB 160 (1985) 380

6He

Pisa, Feb. 24, 2005

6He

Neutron HaloNeutron Halo

Borromean

Pisa, Feb. 24, 2005

0

0 500 1000Ed (keV)

Inte

nsi

ty (

dec

ay -1

MeV

-1)

10-4

10-5

10-6

6He

6Li

+d

Beta-Delayed Deuterons

M.J.G. Borge et al., Nucl. Phys. A560 (1993) 664

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

Anthony et al., PRC 64 (2002) 034301

Qd = 3.007 – S2n Mev

Pisa, Feb. 24, 2005

6HeSpin Alignment

6HeSpin Alignment

)cos 1.5 1 )W( 2nn (

5He

n2

p(5He)= p + pn2 = -pn1

n

L.V. Chulkov et al., PRL 79 (1997) 201

GSI

Pisa, Feb. 24, 2005

Two-neutron exchange in the6He+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 beam

36 MeV/u 240 MeV/u

JINR, Dubna GSI, Darmstadt

1H(6He,pp)5H One-proton knockout

A.A. Korsheninnikov et al., PRL87(01)092501

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: -beam baseline scenario

PS

Decay

RingISOL target & Ion source

SPL

Cyclotrons, linac or FFAG

Decay ring

Brho = 1500 Tm

B = 5 T

Lss = 2500 m

SPS

ECR

Rapid cycling synchrotron

MeV 86.1 Average

MeV 937.1 Average

189

1810

63

62

cms

cms

E

eFeNe

E

eLiHe

Nuclear Physics

6He →6Li + e- +

_

Pisa, Feb. 24, 2005C. Volpe, Proc. INPC2004

Experimental Studies at the Driplines

Pisa, Feb. 24, 2005

N=16

A. Ozawa et al.,, PRL 84 (2000) 5493N=6, 16 T. Otsuka et al., PRL 87(01)082502

Pisa, Feb. 24, 2005

Light dripline nuclei

N=6

N=16

7Hunbound

Pisa, Feb. 24, 2005

s1/2

d5/2

d3/2

fp

20

d5/

2n p

16

24O (29Ne)

empty

D. Cortina-Gil, et al. PRL 93 (2004) 062501

GSI

19O 20O 21O 22O 23O 24O

N =16

GANIL

N =14

Stanoiu et al., PRC 69 (04) 034312

Pisa, Feb. 24, 2005

)0(1 222/1

OsS=0.97(19)

6He806 ms

8He119 ms

7He806 ms

9He806 ms

9Li179 ms

10Li806 ms

11Li8.5 ms

11Be13.8 s

12Be23.6 ms

14Be4.35 ms

13Be806 ms

Vnn

VCnVCn

Unbound

Bound

N=8

Pisa, Feb. 24, 2005

H. Simon et al.,

PRL 83 (1999) 496

(1s1/2)2 = 45(10) %

GSI, 287 MeV/u 11Li

Pisa, Feb. 24, 2005

(12Be,11Be+)

812

4 Be812

4 Be

Spectroscopic factorsNavin et al. PRL 85(00)266

Deformation12Be (p,p’)12Be*(2+) = 2.00(23) fmIwasaki et al., PLB 481 (00) 7

Breakdown of the

N=8 shell closure

Low-lying 1- stateB(E1) = 0.051(13) e2fm2

Iwasaki et al., EPJ A13 (02) 55

2.68 MeVMSU

(1s2+0d2)

RIKEN

Pisa, Feb. 24, 2005

Shimoura et al., PLB 560 (2003) 31

Isomeric 0+ state at 2.24 MeV12mBe 12Be*(2+) 12Be

812

4 Be812

4 Be

0+ 2+ 0+

RIKEN

Pisa, Feb. 24, 2005

22 (G/2)E)E'(E

EA

dd

2

2

2 saE

0 Relative velocity

Chen et al., PLB 505(2001)21

Simon et al.

Er=0.68(10) MeV

9Li(d,p)10LiEr = 0.77(24) MeV

Santi et al., PRC 67(03) 024606

REX ISOLDE

Pisa, Feb. 24, 2005

9He

28 MeV/u 11Be

(11Be,8He+n)

Pisa, Feb. 24, 2005

The N=7 IsotonesThe N=7 Isotones

Pisa, Feb. 24, 2005

6He806 ms

8He119 ms

7He806 ms

9He806 ms

9Li179 ms

10Li806 ms

11Li8.5 ms

11Be13.8 s

12Be23.6 ms

14Be4.35 ms

13Be806 ms

?

C. Forssén et al., NPA 706 (02) 48

Borromean Five-body Pisa, Feb. 24, 2005

)(cos44.0)cos(37.01)( 2nfnfnfW

13Be

s-wave resonance ?

Pisa, Feb. 24, 2005

A. Bonaccorso, ENAM 2004 and IFUP-TH 29/2004

Pisa, Feb. 24, 2005

10Be1.6.106 a

9Li178 ms

8He119 ms

7Hunbound

Zhukov et al., PRC 50 (94) R1

COSMA Valence neutrons in the

p3/2 shell

Korsheninnikov et al. PRL 90(03) 082501

Pisa, Feb. 24, 2005

The 6He (2+) +2n component in 8He

)P(Rnσσ cutT1n

129(15)σ

316σexp

1n

calc1n

mb

mb

Markenroth et al., NPA679 (01) 462

45% 6He(2+) +2n(p3/2,p1/2)

Korshenninikov et al., PRL 90(03) 082501

8He+4HeWolski et al., NPA 701 (02) 29c

Markenroth et al., NPA 679 (01) 462

Pisa, Feb. 24, 2005

Pisa, Feb. 24, 2005

C

Pb

Rtotalp

excp

1

1

113.0)( PbRth

R=0.085

R=0.13

D. Cortina-Gil et al., NPA 720(2003) 3

GSI936 MeV/u 8B

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 statewavefunction

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

Pisa, Feb. 24, 2005

Danilin et al., NPA 632(98) 383

Pisa, Feb. 24, 2005

Danilin et al., NPA 632(98) 383 ............

11Li: + 30 %

Pisa, Feb. 24, 2005

Ewald et al., PRL 93 (04)113002

Pisa, Feb. 24, 2005

S 245

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.

Inger Hayman as Lise Meitner

...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!