Display the Experiment Proposals for S1201

Experiment: S1201

Two-neutron transfer using the (6He,4He) reaction on 9Be and 12C

by the Tigress + Bambino group

Active (Stage 2)
Spokespersons:
F. Sarazin (Colorado School of Mines)

Original Proposal for EEC meeting 200812S

Table of Contents

Detailed Information

Complete/Merged PDF S1201_200812S_merged.pdf
Form data only S1201_200812S.pdf
Detailed Statement S1201_V2.pdf (795.53 kB)

Beam Shift Summary

12-hr ShiftsBeam Line / channelPriority
New Beam Requests
 16 Other

12C(6He,4He) - Stage 2 approval requested 

ISAC-II / TIGRESS beam line

16 Other

9Be(6He,4He) - Stage 1 approval requested

ISAC-II / TIGRESS beam line 

Committee Recommendations
 16 MH
This experiment proposes to explore the use of the (6He,4He) reaction for studying pair transfer reactions, as a replacement of the presently impossible (t,p) reaction. The proposal consists of two parts. The first part is a measurement of the angular distribution of the 12C(6He,4He)14C reaction as a calibration in comparison to the existing (t,p) data. This part is recommended with medium-high priority. The second part is the 9Be(6He,4He)11Be reaction, particularly leading to the state at 8.82 MeV. While this experiment is interesting, this part is deferred until a more precise assessment can be made after the first measurement is carried out.    
Beam Shifts Used
 7 ISAC

Used on Schedule 117.

Beam Shifts Remaining
 9 -

As of July 28, 2010.


Membership

F. Sarazin Colorado School of Mines Associate Professor 50 % Spokesperson
D.Smalley Colorado School of Mines Student (PhD) 100 %  
F.Raiola Colorado School of Mines Research Associate 50 %  
C.Y. Wu Lawrence Livermore National Laboratory Research Scientist 20 %  
F.M.Nunes Michigan State University Professor 20 %  
G. Hackman TRIUMF Research Scientist 20 %  
P.E. Garrett University of Guelph Professor 20 %  
A.C. Morton TRIUMF Research Associate 10 %  
C. Ruiz TRIUMF Research Scientist 10 %  
C.E. Svensson University of Guelph Professor 10 %  
C.J. Pearson TRIUMF Research Associate 10 %  
J. Blackmon Louisiana State University Associate Professor 10 %  
R. Kanungo Saint Mary's University Assistant Professor 10 %  
T.E. Drake University of Toronto Professor Emeritus 10 %  

Basic Information

Date Submitted
2008-11-12 15:44:19
Date Experiment Ready
2009-05-01
Summary *

We propose to study the (6He,4He) reaction as a surrogate reaction for two neutron transfer. We suggest two experiments, namely 12C(6He,4He) and 9Be(6He,4He) to benchmark (6He,4He) against (t,p) reactions by comparing their respective angular distributions for given states. In the second experiment, we would also like to compare the cross sections of the 1n and 2n transfers, as they may be an indication of how the halo neutrons contribute to the transfer process. In the same experiment, we intend to look at a particular excited state in 11Be, which may be in a excited halo-like configuration.

Plain Text Summary *
We propose to study the (6He,4He) reaction as a surrogate reaction for two neutron transfer. We suggest two experiments, namely 12C(6He,4He) and 9Be(6He,4He) to benchmark (6He,4He) against (t,p) reactions by comparing their respective angular distributions for given states. In the second experiment, we would also like to compare the cross sections of the 1n and 2n transfers, as they may be an indication of how the halo neutrons contribute to the transfer process. In the same experiment, we intend to look at a particular excited state in 11Be, which may be in a excited halo-like configuration.
Primary Beam Line
ISAC 2A
ISAC Facilities
ISAC-II Facility
TIGRESS
Secondary Beam
Isotope(s)
6He
Energy
24000
Energy Units
keV
Spot Size (mm, FWHM)
2(mm, FWHM)
Intensity Requested (pps)
10^7(pps)
Minimum Intensity (pps)
10^6(pps)
Maximum Intensity (pps)
10^8(pps)
Charge Constraints
None
Experiment Support
Beam Diagnostics Required
Faraday cups
Signals for Beam Tuning
Collimators in the bambino chamber, FCs downstream and upstream from the target.
DAQ Support
(Summary of Requirements)
Standard TIGRESS acquisition system + support
TRIUMF Support (Resources Needed)
Use of the TIGRESS gamma-array.
NSERC
Use of the TIGRESS gamma-array
Other Funding
The CSM group is supported by the US Dept of Energy (DOE). Use of the Bambino setup provided by the group from LLNL (also supported by DOE).
Safety Issues
Use of thin solid Beryllium target foils. Unlikely to be a problem, if properly handled.

Proposals and Progress Reports

200812S (Original Proposal)