Search for $\alpha$ condensed states in $^{13}$C using $\alpha$ inelastic scattering - INSPIRE

DataBETA

Search for $\alpha$ condensed states in $^{13}$ C using $\alpha$ inelastic scattering

Sep 7, 2021

24 pages

Published in:

PTEP 2021 (2021) 9, 093

Published: Sep 7, 2021

e-Print:

2110.00938 [nucl-ex]

DOI:

10.1093/ptep/ptab102

View in:

reference search4 citations

Citations per year

Abstract: (Oxford University Press)

We searched for the |

\alpha

| condensed state in |

^{13}

|C by measuring the |

\alpha

| inelastic scattering at |

E_\alpha = 388

| MeV at forward angles including 0|

^\circ

|⁠. We performed a distorted-wave Born approximation calculation with the single-folding potential and multipole decomposition analysis to determine the isoscalar transition strengths in |

^{13}

|C. We found a bump structure around |

E_x = 12.5

| MeV due to the isoscalar monopole (⁠|

IS0

|⁠) transition. A peak-fit analysis suggested that this bump consisted of several |

1/2^-

| states. We propose that this bump is due to the mirror state of the 13.5 MeV state in |

^{13}

|N, which dominantly decays to the |

\alpha

| condensed state in |

^{12}

|C. It was speculated that the |

1/2^-

| states around |

E_x = 12.5

| MeV were candidates for the |

\alpha

| condensed state, but the |

3\alpha + n

| orthogonality condition model suggests that the |

\alpha

| condensed state is unlikely to emerge as the negative parity states. We also found two |

1/2^+

| or |

3/2^+

| states at |

E_x = 14.5

| and 16.1 MeV excited with the isoscalar dipole (⁠|

IS1

|⁠) strengths. We suggest that the 16.1 MeV state is a possible candidate for the |

\alpha

| condensed state predicted by the cluster model calculations on the basis of the good correspondence between the experimental and calculated level structures. However, the theoretical |

IS1

| transition strength for this state is significantly smaller than the measured value. Further experimental information is strongly desired to establish the |

\alpha

| condensed state in |

^{13}

|C.

Note:

24 pages, 12 figures, published in PTEP

D05 Few-body problems in nuclear system
D11 Models of nuclear structure
D22 Light ion reactions (A<=4)

References(105)

Figures(12)

[1]

Ikeda K.
,
Takigawa N.
,
Horiuchi H.

- Prog.Theor.Phys.Suppl.E 68 (1968) 464
•
DOI:
- 10.1143/PTPS.E68.464)

[1]

DOI:
- 10.1143/PTPS.E68.464

[2]

Fujiwara Y.
,
Horiuchi
,
H. Ikeda
,
K. Kamimura
,
M. Kat

et al.

- Prog.Theor.Phys.Suppl. 68 (1980) 29
•
DOI:
- 10.1143/PTPS.68.29)

[2]

DOI:
- 10.1143/PTPS.68.29

[3]

Uegaki E.
,
Okabe S.
,
Abe Y.
,
Tanaka H.

- Prog.Theor.Phys. 57 (1977) 1262
•
DOI:
- 10.1143/PTP.57.1262)

[3]

DOI:
- 10.1143/PTP.57.1262

[4]

Transition densities between the 0 1 + , 2 1 + , 4 1 + , 0 2 + , 2 2 + , 1 1 − and 3 1 − states in 12 C derived from the three-alpha resonating-group wave functions

M. Kamimura

- Nucl.Phys.A 351 (1981) 456-480
•
DOI:
- 10.1016/0375-9474(81)90182-2

[4]

Transition densities between the 0 1 + , 2 1 + , 4 1 + , 0 2 + , 2 2 + , 1 1 − and 3 1 − states in 12 C derived from the three-alpha resonating-group wave functions

M. Kamimura

- Nucl.Phys.A 351 (1981) 456-480
•
DOI:
- 10.1016/0375-9474(81)90182-2

[5]

Ab initio shell model with a genuine three nucleon force for the p shell nuclei

Petr Navratil
(
- LLNL, Livermore
)
,
W. Erich Ormand
(
- LLNL, Livermore
)

- Phys.Rev.C 68 (2003) 034305
•
e-Print:
- nucl-th/0305090
•
DOI:
- 10.1103/PhysRevC.68.034305

[5]

Ab initio shell model with a genuine three nucleon force for the p shell nuclei

Petr Navratil
(
- LLNL, Livermore
)
,
W. Erich Ormand
(
- LLNL, Livermore
)

- Phys.Rev.C 68 (2003) 034305
•
e-Print:
- nucl-th/0305090
•
DOI:
- 10.1103/PhysRevC.68.034305

[6]

Interpretation of Some of the Excited States of 4n Self-Conjugate Nuclei

H. Morinaga
(
- Purdue U.
)

- Phys.Rev. 101 (1956) 254-258
•
DOI:
- 10.1103/PhysRev.101.254

[6]

Interpretation of Some of the Excited States of 4n Self-Conjugate Nuclei

H. Morinaga
(
- Purdue U.
)

- Phys.Rev. 101 (1956) 254-258
•
DOI:
- 10.1103/PhysRev.101.254

[7]

Morinaga H.

- Phys.Lett. 21 (1966) 78
•
DOI:
- 10.1016/0031-9163(66)91349-7)

[7]

DOI:
- 10.1016/0031-9163(66)91349-7

[8]

Alpha cluster condensation in C-12 and O-16

- Phys.Rev.Lett. 87 (2001) 192501
•
e-Print:
- nucl-th/0110014
•
DOI:
- 10.1103/PhysRevLett.87.192501

[8]

Alpha cluster condensation in C-12 and O-16

- Phys.Rev.Lett. 87 (2001) 192501
•
e-Print:
- nucl-th/0110014
•
DOI:
- 10.1103/PhysRevLett.87.192501

[9]

Analysis of previous microscopic calculations for second 0+ state in C-12 in terms of three alpha particle Bose condensed state

- Phys.Rev.C 67 (2003) 051306
•
e-Print:
- nucl-th/0302017
•
DOI:
- 10.1103/PhysRevC.67.051306

[10]

Single alpha-particle orbits and Bose-Einstein condensation in C-12

Taiichi Yamada
(
- Kanto Gakuin U.
)
,
Peter Schuck
(
- Orsay, IPN
)

- Eur.Phys.J.A 26 (2005) 185-199
•
e-Print:
- nucl-th/0506048
•
DOI:
- 10.1140/epja/i2005-10168-1

[10]

Single alpha-particle orbits and Bose-Einstein condensation in C-12

Taiichi Yamada
(
- Kanto Gakuin U.
)
,
Peter Schuck
(
- Orsay, IPN
)

- Eur.Phys.J.A 26 (2005) 185-199
•
e-Print:
- nucl-th/0506048
•
DOI:
- 10.1140/epja/i2005-10168-1

[11]

Dilute multi alpha cluster states in nuclei

Taiichi Yamada
(
- Kanto Gakuin U. and
- Orsay, IPN
)
,
Peter Schuck
(
- Orsay, IPN
)

- Phys.Rev.C 69 (2004) 024309
•
e-Print:
- nucl-th/0310077
•
DOI:
- 10.1103/PhysRevC.69.024309

[11]

Dilute multi alpha cluster states in nuclei

Taiichi Yamada
(
- Kanto Gakuin U. and
- Orsay, IPN
)
,
Peter Schuck
(
- Orsay, IPN
)

- Phys.Rev.C 69 (2004) 024309
•
e-Print:
- nucl-th/0310077
•
DOI:
- 10.1103/PhysRevC.69.024309

[12]

New candidate for an alpha cluster condensed state in O-16(alpha, alpha') at 400-MeV

et al.

- Phys.Lett.B 653 (2007) 173-177
•
e-Print:
- nucl-ex/0611021
•
DOI:
- 10.1016/j.physletb.2007.08.016

[12]

New candidate for an alpha cluster condensed state in O-16(alpha, alpha') at 400-MeV

et al.

- Phys.Lett.B 653 (2007) 173-177
•
e-Print:
- nucl-ex/0611021
•
DOI:
- 10.1016/j.physletb.2007.08.016

[13]

Search for the alpha condensed state in O-16

et al.

- Mod.Phys.Lett.A 25 (2010) 1935-1938
•
DOI:
- 10.1142/S021773231000068X

[14]

Search for dilute excited states in O16

- Phys.Rev.C 94 (2016) 5, 051602
•
DOI:
- 10.1103/PhysRevC.94.051602

1-25 of 105
1
2
3
4
5
25 / page