AARHUS UNIVERSITY 12 C and 3 studied with
- Slides: 48
AARHUS UNIVERSITY 12 C and 3 studied with small accelerators • Introduction to the 3 reaction • 3 breakup of the Hoyle state • Search for “missing” states in 12 C 496 th WE-Heraeus-Seminar HANS FYNBO Aarhus University Denmark Bad Honnef February 6 -10 2012 1
AARHUS UNIVERSITY -0. 092 4 He+4 He g. s. 0+ 8 Be g. s. 12 C 0+ 2
AARHUS UNIVERSITY -0. 092 4 He+4 He g. s. 0+ 7. 65 0+ 7. 27 8 Be 4. 44 2+ g. s. 12 C 0+ 3 3
AARHUS UNIVERSITY Quantity Value Q 3 379. 4(2)ke. V Grad/G 4. 12(11) × 10 -4 Ge+e-/G 6. 7(6) × 10 -4 9. 2 Ge+e- 59. 6(1. 5) e. V 2. 5 Chernykh 2010 G(8 Be)/Gtot >0. 96 4 Freer 1994 G(8 Be)/Gtot 0. 83(5) 6 Raduta 2011 Q 1 = -92 ke. V Ge+e- a+a Error(%) 1. 2 Hoyle state 2. 7 Q 2= -287 ke. V Gp 52. 0(1. 4) e. V 2. 7 Crannell G 2005 a +8 Be 4
AARHUS UNIVERSITY 12 C+40 Ca 25 Me. V/u 5
AARHUS UNIVERSITY 3 -rate at low temperatures 8 Be resonance ar. Xiv: 1112. 2136 v 1 [nucl-th] 6
AARHUS UNIVERSITY 3 -rate at high temperatures Haruhiko Morinaga (TUM) 7. 27 10. 84 1 - ≈10. 3 9. 64 (0+) 3 - 7. 65 0+ 4. 44 2+ g. s. 0+ 12 C J =2+ E≈9. 7 Me. V 2+ ?
AARHUS UNIVERSITY Tur et al. APJ 2010 Magkotsios et al. APJs 2010 Magkotsios et al. APJ 2011 The et al. APJ 1998 Phys. Lett. B 2011. Phys. Rev. C 36 (1987) 54. .
AARHUS UNIVERSITY • 3 breakup of the Hoyle state • Search for “missing” states in 12 C 9
AARHUS UNIVERSITY 3 He+11 B d+12 C* d+3 @ 8. 5 Me. V 3 He CMAM, Madrid Oliver Kirsebom (now at Triumf)
AARHUS UNIVERSITY 7. 27 12. 71 1+ 11. 83 2 - 10. 84 1 - ≈10 0, 2+ 9. 64 3 - 7. 65 0+ 4. 44 2+ g. s. 0+ 12 C 5000 events 11
AARHUS UNIVERSITY Limits: Raduta et al. DDE = 7. 5± 4 % DDE = 9. 5± 4 % SD = 83± 5 % 12 (O. Kirsebom et al. to be submitted)
AARHUS UNIVERSITY • 3 breakup of the Hoyle state • Search for “missing” states in 12 C 13
Stellenbosch: Freer et al. (2009): 12 C(p, p´)12 C AARHUS UNIVERSITY 2+ ? 31 - Osaka: Itoh et al. (2011): 12 C( , ´)12 C Yale : Zimmerman et al. (2011): 12 C(p, p´)12 C 3 - 33 - 1 - 14
AARHUS UNIVERSITY Journal of Physics: Conference Series 202 (2010) 012016 Journal of Physics: Conference Series 267 (2011) 012046 15
Idea 1 : Remove 3 - state using b-decay AARHUS UNIVERSITY Only 0+, 1+, and 2+ states
AARHUS UNIVERSITY Direct Kinematics+ISOL 12 C/11 B 12 N/12 B+X p/d 12 N/12 B Magnet b Inverse Kinematics+Separator 12 N/12 B+X Magnets 12 C/11 B p/d b
AARHUS UNIVERSITY K. Jungmann H. Wilschut TRI P separator Solveig Hyldegaard 12 N/12 B 18 R. Raabe
AARHUS UNIVERSITY 12 N 1+ Qbeta=16. 32 15. 11 1+ 12. 71 1+ ≈10 0+ 7. 65 0+ 4. 44 2+ g. s. 0+ 12 C
AARHUS UNIVERSITY 15. 111+ 12 B Qbeta=13. 37 12. 711+ ≈10 0+ 7. 65 0+ 4. 44 2+ g. s. 0+ 12 C
AARHUS UNIVERSITY IGISOL Experiment 12 N/12 B C. Diget (York) Solveig Hyldegaard
AARHUS UNIVERSITY 12 N Natural parity states Qbeta=16. 32 15. 11 1+ 12. 71 1+ ≈10 7. 65 0+ 4. 44 2+ g. s. 0+ 12 C 22
AARHUS UNIVERSITY 15. 111+ 12 B Qbeta=13. 37 12. 711+ ≈10 0+ 7. 65 0+ 4. 44 2+ g. s. 0+ 12 C
AARHUS UNIVERSITY PL B 678, 459 (2009) PR C 80, 044304 (2009) PR C 80, 034316 (2009) PR C 81, 024303 (2010) S. Hyldegaard, C. Diget
AARHUS UNIVERSITY How to get selectivity between 0+ and 2+ ? × 2+ × Only 1 0 +, 2 1+, and 3 2+ states
AARHUS UNIVERSITY “ -delayed” breakup C Oliver Kirsebom (Triumf) Martin Alcorta (Argonne)
AARHUS UNIVERSITY 3 He+10 B p+12 C* 3 He+11 B d+12 C* p+3 d+3 @ 4. 9 Me. V @ 8. 5 Me. V 3 He CMAM, Madrid M. Alcorta et al. , NIM A 605, 318– 325 (2009)
AARHUS UNIVERSITY 1 st case : -decay of 1+ states (proof-of-principle) 3 He+10 B p+12 C* p+3 3 He O. S. Kirsebom et al. , Phys. Lett. B 680, 44 -49 (2009)
AARHUS UNIVERSITY 1 st case : -decay of 1+ states (proof-of-principle) M 1 -decay ≈ GT b-decay
AARHUS UNIVERSITY 2 nd case : -decay of 2+ T=1 state + M 1 >> E 2 1+ , 2+, 3+ no 0+ ! − E 1 decay populate negative parity 1 - , 2 -, 3 -
AARHUS UNIVERSITY 11 B(p, ) 400 ke. V van de Graaf in Aarhus. 2+ 21 - 122+ 31
AARHUS UNIVERSITY 7. 27 16. 1 2+ 15. 11 1+ 14. 08 4+ 13. 35 (2 -) 12. 71 1+ 11. 83 2 - 10. 84 1 - ≈10 0, 2+ 9. 64 3 - 7. 65 0+ 4. 44 2+ g. s. 0+ 12 C
AARHUS UNIVERSITY 7. 27 16. 1 2+ 15. 11 1+ 14. 08 4+ 13. 35 (2 -) 12. 71 1+ 11. 83 2 - 10. 84 1 - ≈10 0, 2+ 9. 64 3 - 7. 65 0+ 4. 44 2+ g. s. 0+ 12 C 240 h 1 n. A @ 165 ke. V 33
AARHUS UNIVERSITY 3 rd case : -decay of 2 - T=1 state 7. 27 16. 6 2 - 16. 1 2+ 15. 11 1+ 14. 08 4+ 13. 35 (2 -) 12. 71 1+ 11. 83 2 - 10. 84 1 - ≈10 0, 2+ 9. 64 3 - 7. 65 0+ 4. 44 2+ g. s. 0+ 12 C 40 h 1 n. A @ 350 ke. V 34
AARHUS UNIVERSITY C. Zemach, Phys Rev. 133 (1964) 1201 : Decay to 3 Fynbo et al. Phys Rev C 79 (2009) 054009 : Decay to 3 35
AARHUS UNIVERSITY 11 B(p, ) 2 - 16. 57 Me. V 2+ 16. 11 Me. V 36
AARHUS UNIVERSITY Outlook 5 MV van de Graaf in Aarhus (HV 1965) Other case where the method can be used? • 8 Be • 16 O • …. . Upgrade of detector setup
AARHUS UNIVERSITY Quantity Value Error(%) Q 3 379. 38(20)ke. V 1. 2 Grad/G 4. 12(11) × 10 -4 2. 7 Ge+e-/G 6. 74(62) × 10 -4 9. 2 Ge+e- 52. 0(1. 4) e. V 2. 7 Crannell 2005 Ge+e- 59. 6(1. 5) e. V 2. 5 Chernykh G(8 Be)/Gtot >0. 96 4 Freer 1994 G(8 Be)/Gtot 0. 83(5) 6 Raduta 2011 38
AARHUS UNIVERSITY THANK YOU FOR YOUR ATTENTION !
AARHUS UNIVERSITY BONUS MATERIAL…
AARHUS UNIVERSITY Natural parity states Decay channels 15. 11 1+ 12. 71 1+ ≈10 0+/2+ 7. 65 0+ 7. 27 12 C The 1+ states cannot decay via the 8 Be ground state because it would require L=1 and therefore a change in parity 3. 03 2+ g. s. 0+ 8 Be+4 He -0. 092 4 He+4 He
Data FMD 1 AARHUS UNIVERSITY 0. 1 B(GT) 0. 01 0. 0001 0+ 2+ 0+2 2+2 0+3 1+ 2+ 2+ 1 0. 1 B(M 1) 1+, T=1 0. 001 0. 0001 2+2 0+3 1+ 2+ 2+ 1 0. 1 B(M 1) 2+, T=1 0. 001 0+ 2+ 0+2 2+2 0+3 1+ 2+ 2+
AARHUS UNIVERSITY 15. 96 7. 27 16. 11 2+ 15. 11 1+ 14. 08 4+ 13. 35 (2 -) 12. 71 1+ 11. 83 2 - 10. 84 1 - ≈10. 3 9. 64 (0 +) 3 - 7. 65 0+ 4. 44 2+ g. s. 0+ 12 C p+11 B
AARHUS UNIVERSITY 15. 96 7. 27 16. 11 2+ 15. 11 1+ 14. 08 4+ 13. 35 (2 -) 12. 71 1+ 11. 83 2 - 10. 84 1 - ≈10. 3 9. 64 (0 +) 3 - 7. 65 0+ 4. 44 2+ g. s. 0+ 12 C Experimental Dalitz plots p+11 B
AARHUS UNIVERSITY 15. 96 7. 27 16. 11 2+ 15. 11 1+ 14. 08 4+ 13. 35 (2 -) 12. 71 1+ 11. 83 2 - 10. 84 1 - ≈10. 3 9. 64 (0 +) 3 - 7. 65 0+ 4. 44 2+ g. s. 0+ 12 C The 13. 35 Me. V state p+11 B X √ 2– 4–
AARHUS UNIVERSITY 15. 96 7. 27 16. 11 2+ 15. 11 1+ 14. 08 4+ 13. 35 (2 -) 12. 71 1+ 11. 83 2 - 10. 84 1 - ≈10. 3 9. 64 (0 +) 3 - 7. 65 0+ 4. 44 2+ g. s. 0+ 12 C The 11. 83 Me. V state 1) 2) p+11 B 2– 3) 2) 1) A. A. Korsheninnikov, Sov. J. Nucl. Phys. 52 (1990 2) H. Fynbo et al. , PRL 91 (2003) 3) R. Alvarez-Rodriguez et al. , PRL 99 (2007) 2–
AARHUS UNIVERSITY -0. 092 12 C* 8 Be 10 -16 s 4 He+4 He 3. 03 2+ ≈10 g. s. 0+ 7. 65 0+, 2+ 0+ 7. 27 8 Be 4. 44 2+ g. s. 12 C 0+ 47
AARHUS UNIVERSITY Dalitz plot 12 C* 1+ 8 Be E 1 1+ 2+ 3 Momentum conservation 12 C Energy conservation QI i 8 Be QII 2/3 QI 2 + 3 E 1 = m 23/(m 1+m 23) x QI = 2/3 x. QI R. H. Dalitz, Philos. Mag. 44, 1068 (1953). E 2
- Aarhus university map
- Aarhus university physics
- Vidar aarhus
- Zonta aarhus
- Aarhus verner panton
- Omkostningsteori
- Aarhus verner panton
- Ergoterapeut århus
- Uautentisk
- Aarhus
- Datalogisk institut aarhus
- Indspilning af sang i aarhus
- Cand psych
- Heimdal aarhus
- Innovationsfonden aarhus
- "aarhus convention"
- Takstbekendtgørelsen
- Motivation aarhus
- Narrative report with contextual descriptions
- To understand and interpret social interactions
- .... they do their homework last night?
- Sociologist who studied dating patterns
- The most studied group is
- Study present perfect continuous
- If you had studied hard you wouldn't failed the exam
- Natural history of disease is best studied by
- Dugdale
- Dugdale criminology
- We've recently studied the
- The motion of a projectile is often studied in terms of
- The scientist mathias schleiden studied _______ in ______.
- We've recently studied the
- Tpcastt attitude
- Diagram studied in requirement analysis
- What is interpersonal attraction
- As darwin studied fossils what new questions arose
- 詹景裕
- Yerevan state university of architecture and construction
- Universitatea de medicina si farmacie victor babes
- Usth
- University of mostar bosnia and herzegovina
- Cjpp guelph
- Ulsan university of science and technology
- University of iowa hospitals and clinics
- Kyiv national university of culture and arts
- The university of science and technology yemen
- Portland state university undergraduate tuition and fees
- Fairfield university tuition room and board
- Maastricht university school of business and economics