EURISOL Instrumentation Reaching the drip lines Best way to reach drip lines: fragmentation or...

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EURISOL Instrumentation Reaching the drip lines est way to reach drip lines: fragmentation or in-flight fission e.g. 48 Ni, 100 Sn, 78 Ni etc fragment separator fragmentation of radioactive beams

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Transcript of EURISOL Instrumentation Reaching the drip lines Best way to reach drip lines: fragmentation or...

Page 1: EURISOL Instrumentation Reaching the drip lines Best way to reach drip lines: fragmentation or in-flight fission e.g. 48 Ni, 100 Sn, 78 Ni etc fragment.

EURISOL Instrumentation

Reaching the drip lines

Best way to reach drip lines: • fragmentation or in-flight fission • e.g. 48Ni, 100Sn, 78Ni etc

fragment separator fragmentation of radioactive beams

Page 2: EURISOL Instrumentation Reaching the drip lines Best way to reach drip lines: fragmentation or in-flight fission e.g. 48 Ni, 100 Sn, 78 Ni etc fragment.

EURISOL Instrumentation

Beta-decay studies

• super-allowed 0+ 0+ decays: CVC, CKM matrix• b-delayed decays: , p, 2p, 3p, n, 2n, 3n

Isobarseparator

Ion sourceTransfer tube

Target

Driver accelerator

+Tape transport

system

Page 3: EURISOL Instrumentation Reaching the drip lines Best way to reach drip lines: fragmentation or in-flight fission e.g. 48 Ni, 100 Sn, 78 Ni etc fragment.

EURISOL Instrumentation

Nuclides T1/2,ms xn Pxn,%11Li 8.5 2n

3n4.1(4)1.9(2)

14Be 14.5 2n3n

0.80(8)0.2(2)

15B 10.4 2n 0.4(2)17B 5.1 2n

3n4n

11(7)3.5(7)0.4(3)

30Na 48 2n 1.17(16)32Na 13.5 2n 8(2)34Na 5.5 2n ~ 50

Beta-delayed neutron detection

• 2n: neutron-neutron correlation two-neutron radioactivity

• neutron knockout reactions: e.g. 28Ne 26O, 30Ne 28O

high-efficiency neutron detector:- TONNERE type- DEMON type

sweeper magnet

Page 4: EURISOL Instrumentation Reaching the drip lines Best way to reach drip lines: fragmentation or in-flight fission e.g. 48 Ni, 100 Sn, 78 Ni etc fragment.

EURISOL Instrumentation

Neutron detection

134

99

98

124

127

129

135

9

D etector for beta-de layed neutron investigations on m icrotron M t25 FLN R JIN R

E. Sokol, Flerov Laboratory, Dubna

3He detectors:• Zero energy threshold• Zero cross-talk• High efficiency• Low sensitivity• Low internal background• Easy to use

Page 5: EURISOL Instrumentation Reaching the drip lines Best way to reach drip lines: fragmentation or in-flight fission e.g. 48 Ni, 100 Sn, 78 Ni etc fragment.

EURISOL Instrumentation

Beta-delayed neutron detection

Buta A. et al., NIM A 455 (2000) pp. 412-423

SCINTILLATOR

MODULES

Collaboration LPC Caen - IFIN Bucarest

beam

Page 6: EURISOL Instrumentation Reaching the drip lines Best way to reach drip lines: fragmentation or in-flight fission e.g. 48 Ni, 100 Sn, 78 Ni etc fragment.

EURISOL Instrumentation

Two-proton radioactivity:• Ground-state decay• 2p decays

Page 7: EURISOL Instrumentation Reaching the drip lines Best way to reach drip lines: fragmentation or in-flight fission e.g. 48 Ni, 100 Sn, 78 Ni etc fragment.

EURISOL Instrumentation

Two-proton radioactivity

• Silicon cube, CENBG

Page 8: EURISOL Instrumentation Reaching the drip lines Best way to reach drip lines: fragmentation or in-flight fission e.g. 48 Ni, 100 Sn, 78 Ni etc fragment.

EURISOL Instrumentation

Two-proton radioactivity: Time projection chamber

Page 9: EURISOL Instrumentation Reaching the drip lines Best way to reach drip lines: fragmentation or in-flight fission e.g. 48 Ni, 100 Sn, 78 Ni etc fragment.

EURISOL Instrumentation

MU

ST

MUST

SPEG

Target9Be

20Mg 19Mg

Mass18Na+p

17Ne+2p

19Mg

17Ne

p

p

SISSI

Two-proton radioactivity: short lived emitters

High-energy proton detectors: MUST1/2High-resolution spectrometer: S800 / SPEG / PRISMA


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