1. Coulex Analysis Code – GOSIA: Current Status of Development
Paweł Napiorkowski (HIL UW -Warsaw)
INTAG workshop, GSI, May 24-25, 2007

2. INTAG workshop, GSI, May 24-25, 2007
Overview
What the GOSIA is.
GOSIA2
GOSIA Manual
Interpolation can make a problem (polynomials vs. spline)
PIN option for GSI experiment
INTAG workshop, GSI, May 24-25, 2007

3. COULEX Analysis Scheme
Measured  yields
Experimental setup geometry: particle and  detectors
Level scheme
MINIMALIZATION PROCEDURE
Errors estimation
available spectroscopic data
(, BR, )
GOSIA
set of matrix elements
Quadrupole rotational invariant sum rules
shape parameters for individual states
SIGMA
INTAG workshop, GSI, May 24-25, 2007

4. INTAG workshop, GSI, May 24-25, 2007
GOSIA2
GOSIA2 is intended to handle both target and projectile ”simultaneous” excitation with common normalization coefficients
”Simultaneous” inclusion of the lines originating from the second partner and usually known spectroscopic data makes it possible to achieve a unique solution for exotic case.
For details – see upgraded manual
INTAG workshop, GSI, May 24-25, 2007

5. INTAG workshop, GSI, May 24-25, 2007
GOSIA HIL
INTAG workshop, GSI, May 24-25, 2007

6. INTAG workshop, GSI, May 24-25, 2007
GOSIA mailing list
To subscribe: send an to
a text message:
subscribe gosia
To get help, consultancy, to request a change in code…
Also:
Magda Zielińska:
Paweł Napiorkowski:
INTAG workshop, GSI, May 24-25, 2007

7. Interpolation: be carefull
Internal conversion coeficient 13 June 2006: Corrected ICC description in OP,YIEL to include use of four point interpolation and increase in number of ICC energies to 50.
Integration: Using excessively fine meshpoints in the OP,INTG step or an excessive number of subdivisions may cause convergence issues.
INTAG workshop, GSI, May 24-25, 2007

8. Polynominals vs. splines
Expect a new option SPL in GOSIA1_002 soon (June 2007)
INTAG workshop, GSI, May 24-25, 2007

9. COULEX with slow down beams
Segmented annular
Si detector
(position and energy?)
Event by event reconstruction:
to group the same scattering angle
to crate gamma spectrum for a given scattering angle Ge
(Θ,φ)
Target
(Θ,φ) Ge
INTAG workshop, GSI, May 24-25, 2007

10. ”Virtual” particle detector
M.Zielińska, GANIL
INTAG workshop, GSI, May 24-25, 2007

11. ”Virtual” Detector Model for GOSIA
PIN option useful to describe very difficult shapes of the particle detector
The idea was successfully tested
Problem: σp(Θ,φ) is not Rutherford’s
But can be measured (e.g. downscaling)
Modification of PIN option in necessary -weight parameter has to be applied to integration procedure
(will be ready after summer 2007)
INTAG workshop, GSI, May 24-25, 2007

12. Experiment – a physics case
Something old, something new…
Known - to test the procedure
Unknown & exotic: to have a discover
100Mo & 102Mo
INTAG workshop, GSI, May 24-25, 2007

13. Low laying 0+ in Mo isotopes
INTAG workshop, GSI, May 24-25, 2007

14. Shape evolution in Mo isotopes
M.Zielińska, K.Wrzosek,…
INTAG workshop, GSI, May 24-25, 2007

15. What is a deformation of 102Mo?
INTAG workshop, GSI, May 24-25, 2007