matthew reed, brighton pre-spec meeting january 2011
DESCRIPTION
Discovery of highly excited long-lived isomers in neutron-rich hafnium and tantalum isotopes through direct mass measurements. Matthew Reed, Brighton PRE-SPEC meeting January 2011. Region of Interest. 2. I. J. Cullen, Private Communication. Matthew Reed, Brighton PRE-SPEC meeting January 2011. - PowerPoint PPT PresentationTRANSCRIPT
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Discovery of highly excited long-lived isomers in neutron-
rich hafnium and tantalum isotopes
through direct mass measurements
Matthew Reed, Brighton PRE-SPEC meeting January 2011
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Region of Interest
2. I. J. Cullen, Private Communication
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Region of Interest
2. I. J. Cullen, Private Communication
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Region of Interest
3. P. Walker et al., Nature, 399 (1999) 35-40
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IonSources UNILAC
SIS
ES
R
SHIP
FR
S
Experimental Areas
197Au Beam at ~500 Mev/u
9Be Target
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1. F. Bosch, J. Phys. B: At. Mol. Opt. Phys. 36(2003) 585-597
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time
4 particles with different mass over charge ratios
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Sin(1)
Sin(2)
Sin(3)
Sin(4)
1234time
Fast Fourier Transform
Schottky Mass Spectrometry
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A =190
q=+74
190W+74
190Re+74
190mOs+74
190gOs+74
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Loss MechanismBare Ions
Lorentz Corrected
t1/2=21(4)m
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Hafnium A=183
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Hafnium A=183
γ decay ~3s cooling time
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A=184
184gTa+72
184gHf+72
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A=184
184gTa+72
184gHf+72
184m1Hf+72
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A=184
184gTa+72
184gHf+72
184m1Hf+72
184m2Hf+72
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Matthew Reed, Brighton PRE-SPEC meeting January 2011
Merging
2. I. J. Cullen, Thesis 2010
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TantalumA=186
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TantalumA=186
γ decay
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TantalumA=186
β decay
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A=187
187gRe+73
187gTa+73
187gW+73
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A=187
187gRe+73
187gTa+73
187gW+73
187m1Ta+73
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A=187
187gRe+73
187gTa+73
187gW+73
187m1Ta+73
187m2Ta+73
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Results
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Results
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Results
Matthew Reed, Brighton PRE-SPEC meeting January 2011
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Collaborators
P.M. Walker, K. Blaum, F. Bosch, C. Brandau, J.J. Carroll, D.M. Cullen, I.J. Cullen, A.Y. Deo, B. Detwiler, C. Dimopoulou, G.D.Dracoulis,
F. Farinon, H. Geissel, E. Haettner, M. Heil, R.S. Kempley, R. Knöbel, C. Kozhuharov, J. Kurcewicz, N. Kuzminchuk, S. Litvinov, Yu.A.Litvinov,
Z. Liu, R. Mao, C. Nociforo, F. Nolden, W.R. Plass, A. Prochazka, C.Scheidenberger, M. Steck, T. Stöhlker, B. Sun, T.D. Swan, G. Trees,
H. Weick, N. Winckler, M.Winkler, P.J. Woods and T.Yamaguchi
Thank you!
Matthew Reed, Brighton PRE-SPEC meeting January 2011